[Script Info]
Title: 
[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:00.00,0:00:03.06,Default,,0000,0000,0000,,>> So here we are in SPSS.
Dialogue: 0,0:00:03.06,0:00:04.90,Default,,0000,0000,0000,,I have created a junk data
Dialogue: 0,0:00:04.90,0:00:07.22,Default,,0000,0000,0000,,set just to help\Nillustrate how we can
Dialogue: 0,0:00:07.22,0:00:08.84,Default,,0000,0000,0000,,compute variables\Nor compute
Dialogue: 0,0:00:08.84,0:00:09.98,Default,,0000,0000,0000,,new variables using
Dialogue: 0,0:00:09.98,0:00:12.01,Default,,0000,0000,0000,,the values from\Nexisting ones.
Dialogue: 0,0:00:12.01,0:00:14.14,Default,,0000,0000,0000,,This is a pretty\Nstraightforward process.
Dialogue: 0,0:00:14.14,0:00:15.28,Default,,0000,0000,0000,,It looks a little bit
Dialogue: 0,0:00:15.28,0:00:16.68,Default,,0000,0000,0000,,different than things\Nthat we've done
Dialogue: 0,0:00:16.68,0:00:18.58,Default,,0000,0000,0000,,before or other\Nways that we're
Dialogue: 0,0:00:18.58,0:00:20.64,Default,,0000,0000,0000,,going to be using\NSPSS in this course.
Dialogue: 0,0:00:20.64,0:00:22.44,Default,,0000,0000,0000,,So it might look a\Nlittle bit different,
Dialogue: 0,0:00:22.44,0:00:23.98,Default,,0000,0000,0000,,but it is pretty\Nstraightforward and
Dialogue: 0,0:00:23.98,0:00:26.38,Default,,0000,0000,0000,,pretty easy once you\Nknow how to do this.
Dialogue: 0,0:00:26.38,0:00:27.74,Default,,0000,0000,0000,,So the first\Nthing that we'll
Dialogue: 0,0:00:27.74,0:00:29.34,Default,,0000,0000,0000,,do is go to Transform,
Dialogue: 0,0:00:29.34,0:00:30.68,Default,,0000,0000,0000,,and then the\Nfirst option we
Dialogue: 0,0:00:30.68,0:00:32.12,Default,,0000,0000,0000,,have there is\Ncompute variable.
Dialogue: 0,0:00:32.12,0:00:34.44,Default,,0000,0000,0000,,So click on that. We get
Dialogue: 0,0:00:34.44,0:00:36.16,Default,,0000,0000,0000,,this new window\Nthat pops up.
Dialogue: 0,0:00:36.16,0:00:37.80,Default,,0000,0000,0000,,The first thing\Nthat we really want
Dialogue: 0,0:00:37.80,0:00:39.34,Default,,0000,0000,0000,,to look at is in\Nthe top left,
Dialogue: 0,0:00:39.34,0:00:42.58,Default,,0000,0000,0000,,and that's this target\Nvariable window.
Dialogue: 0,0:00:42.58,0:00:44.13,Default,,0000,0000,0000,,Basically what\Nthe computer
Dialogue: 0,0:00:44.13,0:00:45.61,Default,,0000,0000,0000,,is asking you is to create
Dialogue: 0,0:00:45.61,0:00:47.63,Default,,0000,0000,0000,,a name for the\Nnew variable
Dialogue: 0,0:00:47.63,0:00:49.07,Default,,0000,0000,0000,,that you're going\Nto be computing.
Dialogue: 0,0:00:49.07,0:00:50.86,Default,,0000,0000,0000,,This name needs\Nto be unique,
Dialogue: 0,0:00:50.86,0:00:53.17,Default,,0000,0000,0000,,it's one that can't\Nhave spaces in it,
Dialogue: 0,0:00:53.17,0:00:55.32,Default,,0000,0000,0000,,and it should avoid\Nspecial characters.
Dialogue: 0,0:00:55.32,0:00:56.71,Default,,0000,0000,0000,,But, in this case,
Dialogue: 0,0:00:56.71,0:00:58.63,Default,,0000,0000,0000,,what I like to\Ndo is include
Dialogue: 0,0:00:58.63,0:01:01.33,Default,,0000,0000,0000,,some piece of\Ninformation in there
Dialogue: 0,0:01:01.33,0:01:03.55,Default,,0000,0000,0000,,in the naming\Nconvention I use that
Dialogue: 0,0:01:03.55,0:01:04.81,Default,,0000,0000,0000,,helps me know what this is
Dialogue: 0,0:01:04.81,0:01:06.25,Default,,0000,0000,0000,,just by looking at it.
Dialogue: 0,0:01:06.25,0:01:07.89,Default,,0000,0000,0000,,So what we're going\Nto be doing is
Dialogue: 0,0:01:07.89,0:01:09.65,Default,,0000,0000,0000,,we're going to be\Nsumming items 1,
Dialogue: 0,0:01:09.65,0:01:10.97,Default,,0000,0000,0000,,2, 3, 4, 5,
Dialogue: 0,0:01:10.97,0:01:12.74,Default,,0000,0000,0000,,and 6 together, adding\Nthose together.
Dialogue: 0,0:01:12.74,0:01:14.33,Default,,0000,0000,0000,,So an easy way\Nto do that is
Dialogue: 0,0:01:14.33,0:01:17.48,Default,,0000,0000,0000,,just to put sumofitems.
Dialogue: 0,0:01:17.48,0:01:20.04,Default,,0000,0000,0000,,That way, when I look at
Dialogue: 0,0:01:20.04,0:01:21.85,Default,,0000,0000,0000,,this new variable\Nonce it's generated,
Dialogue: 0,0:01:21.85,0:01:23.35,Default,,0000,0000,0000,,I know that that's\Nthe variable
Dialogue: 0,0:01:23.35,0:01:24.93,Default,,0000,0000,0000,,that I really want\Nto be working
Dialogue: 0,0:01:24.93,0:01:26.72,Default,,0000,0000,0000,,with or running\Nmy tests on
Dialogue: 0,0:01:26.72,0:01:28.03,Default,,0000,0000,0000,,because that contains
Dialogue: 0,0:01:28.03,0:01:29.86,Default,,0000,0000,0000,,the information from\Nthe other ones.
Dialogue: 0,0:01:29.86,0:01:32.97,Default,,0000,0000,0000,,You can click on\NType & Label.
Dialogue: 0,0:01:32.97,0:01:36.39,Default,,0000,0000,0000,,The label is the more\Ndrawn-out explanation.
Dialogue: 0,0:01:36.39,0:01:37.87,Default,,0000,0000,0000,,That's one that\Nyou can include
Dialogue: 0,0:01:37.87,0:01:39.39,Default,,0000,0000,0000,,additional characters or
Dialogue: 0,0:01:39.39,0:01:41.07,Default,,0000,0000,0000,,spaces and special\Ncharacters.
Dialogue: 0,0:01:41.07,0:01:43.15,Default,,0000,0000,0000,,In our case, I'm\Ngoing to put this is
Dialogue: 0,0:01:43.15,0:01:48.98,Default,,0000,0000,0000,,the sum of items\N1 through 6.
Dialogue: 0,0:01:48.98,0:01:50.79,Default,,0000,0000,0000,,And that way I know that
Dialogue: 0,0:01:50.79,0:01:52.55,Default,,0000,0000,0000,,that is going to give me
Dialogue: 0,0:01:52.55,0:01:55.15,Default,,0000,0000,0000,,a more drawn-out\Nexplanation
Dialogue: 0,0:01:55.15,0:01:57.01,Default,,0000,0000,0000,,of what this\Nvariable includes.
Dialogue: 0,0:01:57.01,0:01:59.32,Default,,0000,0000,0000,,We know this is\Ngoing to be numeric.
Dialogue: 0,0:01:59.32,0:02:01.18,Default,,0000,0000,0000,,So click Continue.
Dialogue: 0,0:02:01.18,0:02:03.11,Default,,0000,0000,0000,,The next thing we're\Ngoing to look at
Dialogue: 0,0:02:03.11,0:02:05.04,Default,,0000,0000,0000,,is this numeric\Nexpression box.
Dialogue: 0,0:02:05.04,0:02:06.53,Default,,0000,0000,0000,,And will actually\Ncome back
Dialogue: 0,0:02:06.53,0:02:07.73,Default,,0000,0000,0000,,to this in just a minute,
Dialogue: 0,0:02:07.73,0:02:08.39,Default,,0000,0000,0000,,but this is where you're
Dialogue: 0,0:02:08.39,0:02:09.33,Default,,0000,0000,0000,,going to be doing most
Dialogue: 0,0:02:09.33,0:02:11.39,Default,,0000,0000,0000,,of the work when you're\Ncomputing a variable.
Dialogue: 0,0:02:11.39,0:02:13.19,Default,,0000,0000,0000,,What you'll want\Nto go to next
Dialogue: 0,0:02:13.19,0:02:14.88,Default,,0000,0000,0000,,is this function\Ngroup area.
Dialogue: 0,0:02:14.88,0:02:16.66,Default,,0000,0000,0000,,So I'm going to\Nclick on All.
Dialogue: 0,0:02:16.66,0:02:18.63,Default,,0000,0000,0000,,And you notice right\Nbelow it we've
Dialogue: 0,0:02:18.63,0:02:20.58,Default,,0000,0000,0000,,got these functions\Nand special variables,
Dialogue: 0,0:02:20.58,0:02:22.82,Default,,0000,0000,0000,,and this popped up\Nwhen I clicked on All.
Dialogue: 0,0:02:22.82,0:02:24.55,Default,,0000,0000,0000,,This has a whole bunch of
Dialogue: 0,0:02:24.55,0:02:26.20,Default,,0000,0000,0000,,different pre-existing\Nfunctions,
Dialogue: 0,0:02:26.20,0:02:27.64,Default,,0000,0000,0000,,so you don't need to\Nreinvent the wheel,
Dialogue: 0,0:02:27.64,0:02:28.87,Default,,0000,0000,0000,,you can basically use
Dialogue: 0,0:02:28.87,0:02:30.95,Default,,0000,0000,0000,,these pre-existing\Nfunctions to
Dialogue: 0,0:02:30.95,0:02:33.14,Default,,0000,0000,0000,,help you compute\Nthis new variable.
Dialogue: 0,0:02:33.14,0:02:34.71,Default,,0000,0000,0000,,I'm going to go\Ndown to sum,
Dialogue: 0,0:02:34.71,0:02:36.25,Default,,0000,0000,0000,,and these are in\Nalphabetical order,
Dialogue: 0,0:02:36.25,0:02:37.89,Default,,0000,0000,0000,,so it's pretty\Neasy to find.
Dialogue: 0,0:02:37.89,0:02:40.18,Default,,0000,0000,0000,,Here we have sum, and\Nwhen I click on sum,
Dialogue: 0,0:02:40.18,0:02:41.49,Default,,0000,0000,0000,,you'll notice\Nthat this box on
Dialogue: 0,0:02:41.49,0:02:43.96,Default,,0000,0000,0000,,the left populated\Nwith some text.
Dialogue: 0,0:02:43.96,0:02:46.00,Default,,0000,0000,0000,,This box is actually\Npretty useful.
Dialogue: 0,0:02:46.00,0:02:47.65,Default,,0000,0000,0000,,So the first thing\Nit shows you is
Dialogue: 0,0:02:47.65,0:02:48.57,Default,,0000,0000,0000,,an example of what
Dialogue: 0,0:02:48.57,0:02:50.21,Default,,0000,0000,0000,,this expression\Nis going to be.
Dialogue: 0,0:02:50.21,0:02:51.54,Default,,0000,0000,0000,,And our expression\Nsounds like
Dialogue: 0,0:02:51.54,0:02:52.64,Default,,0000,0000,0000,,a really fancy term.
Dialogue: 0,0:02:52.64,0:02:54.05,Default,,0000,0000,0000,,If you've ever\Nused a formula
Dialogue: 0,0:02:54.05,0:02:55.67,Default,,0000,0000,0000,,in Excel, it's\Nbasically that.
Dialogue: 0,0:02:55.67,0:02:56.99,Default,,0000,0000,0000,,It's telling the computer
Dialogue: 0,0:02:56.99,0:02:58.46,Default,,0000,0000,0000,,what it needs to do.
Dialogue: 0,0:02:58.46,0:03:00.75,Default,,0000,0000,0000,,In this case,\Njust like Excel,
Dialogue: 0,0:03:00.75,0:03:02.03,Default,,0000,0000,0000,,we've got the word sum,
Dialogue: 0,0:03:02.03,0:03:03.57,Default,,0000,0000,0000,,which tells the computer\Nit's going to be
Dialogue: 0,0:03:03.57,0:03:05.36,Default,,0000,0000,0000,,summing different\Nvalues together,
Dialogue: 0,0:03:05.36,0:03:06.63,Default,,0000,0000,0000,,and then in parentheses,
Dialogue: 0,0:03:06.63,0:03:07.57,Default,,0000,0000,0000,,immediately after that,
Dialogue: 0,0:03:07.57,0:03:09.07,Default,,0000,0000,0000,,we have different\Nvariables
Dialogue: 0,0:03:09.07,0:03:10.70,Default,,0000,0000,0000,,that are separated\Nby a comma,
Dialogue: 0,0:03:10.70,0:03:11.93,Default,,0000,0000,0000,,and that's what tells the
Dialogue: 0,0:03:11.93,0:03:13.39,Default,,0000,0000,0000,,computer to add x, y,
Dialogue: 0,0:03:13.39,0:03:15.15,Default,,0000,0000,0000,,and z things\Ntogether to create
Dialogue: 0,0:03:15.15,0:03:17.80,Default,,0000,0000,0000,,a new variable or\Ncompute a new variable.
Dialogue: 0,0:03:17.80,0:03:18.87,Default,,0000,0000,0000,,This also provides
Dialogue: 0,0:03:18.87,0:03:20.75,Default,,0000,0000,0000,,additional extra\Ncontent here,
Dialogue: 0,0:03:20.75,0:03:22.19,Default,,0000,0000,0000,,but we don't need to\Nworry about that.
Dialogue: 0,0:03:22.19,0:03:23.93,Default,,0000,0000,0000,,I found this is\Nhelpful if you
Dialogue: 0,0:03:23.93,0:03:26.00,Default,,0000,0000,0000,,are stuck or something\Nisn't working right.
Dialogue: 0,0:03:26.00,0:03:27.93,Default,,0000,0000,0000,,So we've got sum selected,
Dialogue: 0,0:03:27.93,0:03:29.78,Default,,0000,0000,0000,,we're going to be\Nsumming the items of 1,
Dialogue: 0,0:03:29.78,0:03:31.76,Default,,0000,0000,0000,,2, 3, 4, 5, and\N6 together.
Dialogue: 0,0:03:31.76,0:03:33.06,Default,,0000,0000,0000,,We've got that selected.
Dialogue: 0,0:03:33.06,0:03:34.11,Default,,0000,0000,0000,,So the next thing you do
Dialogue: 0,0:03:34.11,0:03:35.19,Default,,0000,0000,0000,,is click this up arrow,
Dialogue: 0,0:03:35.19,0:03:36.27,Default,,0000,0000,0000,,which basically takes
Dialogue: 0,0:03:36.27,0:03:38.03,Default,,0000,0000,0000,,that pre-existing function
Dialogue: 0,0:03:38.03,0:03:39.72,Default,,0000,0000,0000,,and it kicks it up\Nto this numeric
Dialogue: 0,0:03:39.72,0:03:41.55,Default,,0000,0000,0000,,and expression box.
Dialogue: 0,0:03:41.55,0:03:43.87,Default,,0000,0000,0000,,The next thing that\Nwe're going to do,
Dialogue: 0,0:03:43.87,0:03:44.71,Default,,0000,0000,0000,,we've already told
Dialogue: 0,0:03:44.71,0:03:45.81,Default,,0000,0000,0000,,the computer\Nthat we're going
Dialogue: 0,0:03:45.81,0:03:47.74,Default,,0000,0000,0000,,to sum different\Nvariables together,
Dialogue: 0,0:03:47.74,0:03:48.91,Default,,0000,0000,0000,,we need to tell it which
Dialogue: 0,0:03:48.91,0:03:50.48,Default,,0000,0000,0000,,variables to sum together.
Dialogue: 0,0:03:50.48,0:03:52.79,Default,,0000,0000,0000,,So the easy way\Nto do this is to
Dialogue: 0,0:03:52.79,0:03:54.11,Default,,0000,0000,0000,,click on the first
Dialogue: 0,0:03:54.11,0:03:55.44,Default,,0000,0000,0000,,item that you\Nwant to include,
Dialogue: 0,0:03:55.44,0:03:57.85,Default,,0000,0000,0000,,and you'll notice\Nthat this arrow
Dialogue: 0,0:03:57.85,0:03:59.29,Default,,0000,0000,0000,,switch sides from pointing
Dialogue: 0,0:03:59.29,0:04:00.78,Default,,0000,0000,0000,,to the left to\Npointing to the right,
Dialogue: 0,0:04:00.78,0:04:02.06,Default,,0000,0000,0000,,click over 1,
Dialogue: 0,0:04:02.06,0:04:04.35,Default,,0000,0000,0000,,and we've already\Nmoved over item 1.
Dialogue: 0,0:04:04.35,0:04:07.02,Default,,0000,0000,0000,,What you need to be\Ncareful of is that you
Dialogue: 0,0:04:07.02,0:04:09.64,Default,,0000,0000,0000,,always have a comma\Nafter each variable,
Dialogue: 0,0:04:09.64,0:04:11.08,Default,,0000,0000,0000,,except for the last one.
Dialogue: 0,0:04:11.08,0:04:12.60,Default,,0000,0000,0000,,So a comma is\Nalready here,
Dialogue: 0,0:04:12.60,0:04:14.82,Default,,0000,0000,0000,,but what I usually do\Nis I just hit a comma,
Dialogue: 0,0:04:14.82,0:04:16.68,Default,,0000,0000,0000,,I go to item 2,
Dialogue: 0,0:04:16.68,0:04:19.01,Default,,0000,0000,0000,,kick that over, comma,
Dialogue: 0,0:04:19.01,0:04:21.03,Default,,0000,0000,0000,,item 3, kick that over,
Dialogue: 0,0:04:21.03,0:04:23.55,Default,,0000,0000,0000,,comma, item 4,\Nkick that over,
Dialogue: 0,0:04:23.55,0:04:25.26,Default,,0000,0000,0000,,comma, item 5,
Dialogue: 0,0:04:25.26,0:04:26.88,Default,,0000,0000,0000,,kick that over, comma,
Dialogue: 0,0:04:26.88,0:04:28.94,Default,,0000,0000,0000,,item 6, kick that over.
Dialogue: 0,0:04:28.94,0:04:30.42,Default,,0000,0000,0000,,Now, we know that item 6
Dialogue: 0,0:04:30.42,0:04:31.92,Default,,0000,0000,0000,,is the last one we have,
Dialogue: 0,0:04:31.92,0:04:33.69,Default,,0000,0000,0000,,the last variable\Nwe're including,
Dialogue: 0,0:04:33.69,0:04:35.10,Default,,0000,0000,0000,,so what we're\Ngoing to do is
Dialogue: 0,0:04:35.10,0:04:36.70,Default,,0000,0000,0000,,just delete out\Nthat question mark,
Dialogue: 0,0:04:36.70,0:04:38.52,Default,,0000,0000,0000,,we're going to delete\Nout that last comma,
Dialogue: 0,0:04:38.52,0:04:40.26,Default,,0000,0000,0000,,and then if we read\Nthrough this real quick
Dialogue: 0,0:04:40.26,0:04:40.98,Default,,0000,0000,0000,,just to make sure we
Dialogue: 0,0:04:40.98,0:04:42.19,Default,,0000,0000,0000,,don't have any problems,
Dialogue: 0,0:04:42.19,0:04:45.10,Default,,0000,0000,0000,,we've got creating\Nsumofitems,
Dialogue: 0,0:04:45.10,0:04:46.88,Default,,0000,0000,0000,,this is going to\Nbe the sum of
Dialogue: 0,0:04:46.88,0:04:48.44,Default,,0000,0000,0000,,item 1, 2, 3,
Dialogue: 0,0:04:48.44,0:04:51.28,Default,,0000,0000,0000,,4, 5, and 6,
Dialogue: 0,0:04:51.28,0:04:54.10,Default,,0000,0000,0000,,and what we're going\Nto do now is click OK.
Dialogue: 0,0:04:54.10,0:04:56.62,Default,,0000,0000,0000,,An output window pops
Dialogue: 0,0:04:56.62,0:04:57.72,Default,,0000,0000,0000,,up and it basically tells
Dialogue: 0,0:04:57.72,0:04:58.86,Default,,0000,0000,0000,,you what the computer did.
Dialogue: 0,0:04:58.86,0:05:00.50,Default,,0000,0000,0000,,It computed the\Nsum of items,
Dialogue: 0,0:05:00.50,0:05:01.83,Default,,0000,0000,0000,,which was the\Nsum of item 1,
Dialogue: 0,0:05:01.83,0:05:03.32,Default,,0000,0000,0000,,2, 3, 4, 5, and 6,
Dialogue: 0,0:05:03.32,0:05:05.11,Default,,0000,0000,0000,,it gives us the\Nvariable label,
Dialogue: 0,0:05:05.11,0:05:08.62,Default,,0000,0000,0000,,it gives us that\Ndescriptive text I put in.
Dialogue: 0,0:05:08.62,0:05:10.08,Default,,0000,0000,0000,,I'm just going to\Nminimize this window,
Dialogue: 0,0:05:10.08,0:05:11.28,Default,,0000,0000,0000,,and if we look back here,
Dialogue: 0,0:05:11.28,0:05:12.20,Default,,0000,0000,0000,,you might notice that
Dialogue: 0,0:05:12.20,0:05:13.62,Default,,0000,0000,0000,,there's this new column,
Dialogue: 0,0:05:13.62,0:05:15.51,Default,,0000,0000,0000,,this new variable,\Nthat sumofitems,
Dialogue: 0,0:05:15.51,0:05:16.94,Default,,0000,0000,0000,,that wasn't there\Nwhen we started,
Dialogue: 0,0:05:16.94,0:05:19.16,Default,,0000,0000,0000,,and that's because\NSPSS computed that.
Dialogue: 0,0:05:19.16,0:05:20.78,Default,,0000,0000,0000,,And if we add\Nthese together,
Dialogue: 0,0:05:20.78,0:05:22.24,Default,,0000,0000,0000,,if you add each row,
Dialogue: 0,0:05:22.24,0:05:24.32,Default,,0000,0000,0000,,we've got 1, 2, 1, 3, 5,
Dialogue: 0,0:05:24.32,0:05:26.56,Default,,0000,0000,0000,,1, that adds to 13,
Dialogue: 0,0:05:26.56,0:05:28.00,Default,,0000,0000,0000,,5, 1, 2,
Dialogue: 0,0:05:28.00,0:05:29.94,Default,,0000,0000,0000,,3, 5, 1 adds to 17.
Dialogue: 0,0:05:29.94,0:05:31.54,Default,,0000,0000,0000,,So it's done that\Nmath for us.
Dialogue: 0,0:05:31.54,0:05:33.42,Default,,0000,0000,0000,,We didn't have to\Nmanually do it.
Dialogue: 0,0:05:33.42,0:05:35.72,Default,,0000,0000,0000,,I know, yes, it'd\Nbe pretty easy to
Dialogue: 0,0:05:35.72,0:05:38.28,Default,,0000,0000,0000,,manually do this\Nfor 10 cases,
Dialogue: 0,0:05:38.28,0:05:41.06,Default,,0000,0000,0000,,but if you have a dataset\Nthat has 500 cases,
Dialogue: 0,0:05:41.06,0:05:43.00,Default,,0000,0000,0000,,that would be very\Ntime-consuming to do.
Dialogue: 0,0:05:43.00,0:05:45.46,Default,,0000,0000,0000,,And you could see\Nthat this function of
Dialogue: 0,0:05:45.46,0:05:47.36,Default,,0000,0000,0000,,computing this\Nvariable can
Dialogue: 0,0:05:47.36,0:05:48.46,Default,,0000,0000,0000,,save you a lot of time.
Dialogue: 0,0:05:48.46,0:05:49.82,Default,,0000,0000,0000,,It's also more accurate.
Dialogue: 0,0:05:49.82,0:05:51.38,Default,,0000,0000,0000,,It's going to\Ntake any error
Dialogue: 0,0:05:51.38,0:05:53.79,Default,,0000,0000,0000,,out of the equation.
Dialogue: 0,0:05:53.79,0:05:54.94,Default,,0000,0000,0000,,And we know that often
Dialogue: 0,0:05:54.94,0:05:56.12,Default,,0000,0000,0000,,when we do things by hand,
Dialogue: 0,0:05:56.12,0:05:57.90,Default,,0000,0000,0000,,we can introduce\Nerror into things,
Dialogue: 0,0:05:57.90,0:05:59.55,Default,,0000,0000,0000,,so we want to avoid that.
Dialogue: 0,0:05:59.55,0:06:01.84,Default,,0000,0000,0000,,That's one way to\Ncomputer a variable.
Dialogue: 0,0:06:01.84,0:06:04.76,Default,,0000,0000,0000,,I'm going to show\Nyou a different type
Dialogue: 0,0:06:04.76,0:06:06.16,Default,,0000,0000,0000,,of variable that\Nwe can compute.
Dialogue: 0,0:06:06.16,0:06:07.84,Default,,0000,0000,0000,,I'm going to go\Nback to Transform,
Dialogue: 0,0:06:07.84,0:06:09.57,Default,,0000,0000,0000,,I'm going to go back\Nto Compute Variable.
Dialogue: 0,0:06:09.57,0:06:11.42,Default,,0000,0000,0000,,I'm actually going\Nto clear this out.
Dialogue: 0,0:06:11.42,0:06:12.86,Default,,0000,0000,0000,,We're done with\Nsomeofitems,
Dialogue: 0,0:06:12.86,0:06:13.84,Default,,0000,0000,0000,,we don't need to\Nworry about it,
Dialogue: 0,0:06:13.84,0:06:15.28,Default,,0000,0000,0000,,we're not going to use\Nthe same expression,
Dialogue: 0,0:06:15.28,0:06:16.14,Default,,0000,0000,0000,,so I'm going to click
Dialogue: 0,0:06:16.14,0:06:17.84,Default,,0000,0000,0000,,Reset in the bottom here.
Dialogue: 0,0:06:17.84,0:06:20.24,Default,,0000,0000,0000,,So what I want\Nto do is create
Dialogue: 0,0:06:20.24,0:06:22.54,Default,,0000,0000,0000,,the mean of the different\Nitems that we have.
Dialogue: 0,0:06:22.54,0:06:24.00,Default,,0000,0000,0000,,Sometimes if\Nyou're working
Dialogue: 0,0:06:24.00,0:06:26.10,Default,,0000,0000,0000,,with a pre-existing scale,
Dialogue: 0,0:06:26.10,0:06:28.32,Default,,0000,0000,0000,,it might tell you to add
Dialogue: 0,0:06:28.32,0:06:29.74,Default,,0000,0000,0000,,all the items\Ntogether and then
Dialogue: 0,0:06:29.74,0:06:31.34,Default,,0000,0000,0000,,that's what represents
Dialogue: 0,0:06:31.34,0:06:34.22,Default,,0000,0000,0000,,that theoretical concept\Nor that measure,
Dialogue: 0,0:06:34.22,0:06:36.38,Default,,0000,0000,0000,,sometimes it might tell\Nyou to use the mean.
Dialogue: 0,0:06:36.38,0:06:38.60,Default,,0000,0000,0000,,So what I want to do\Nis compute both of
Dialogue: 0,0:06:38.60,0:06:39.72,Default,,0000,0000,0000,,these things because they
Dialogue: 0,0:06:39.72,0:06:41.30,Default,,0000,0000,0000,,both might be\Nhelpful to me.
Dialogue: 0,0:06:41.30,0:06:42.86,Default,,0000,0000,0000,,So what I'm going to do is
Dialogue: 0,0:06:42.86,0:06:44.99,Default,,0000,0000,0000,,I'm going to type\Nmeanofitems.
Dialogue: 0,0:06:44.99,0:06:47.24,Default,,0000,0000,0000,,And again, that very\Nquickly lets me
Dialogue: 0,0:06:47.24,0:06:48.23,Default,,0000,0000,0000,,differentiate between
Dialogue: 0,0:06:48.23,0:06:49.97,Default,,0000,0000,0000,,sumofitems and\Nmeanofitems.
Dialogue: 0,0:06:49.97,0:06:51.70,Default,,0000,0000,0000,,Type & label, and again,
Dialogue: 0,0:06:51.70,0:06:54.72,Default,,0000,0000,0000,,I'm just going to put\Nmean of items 1 through
Dialogue: 0,0:06:54.72,0:07:01.90,Default,,0000,0000,0000,,6, click Continue.
Dialogue: 0,0:07:01.90,0:07:04.90,Default,,0000,0000,0000,,Just like we did\Nbefore, click on All,
Dialogue: 0,0:07:04.90,0:07:06.38,Default,,0000,0000,0000,,and then we're\Ngoing to go down
Dialogue: 0,0:07:06.38,0:07:10.34,Default,,0000,0000,0000,,to mean, here's mean.
Dialogue: 0,0:07:10.34,0:07:11.79,Default,,0000,0000,0000,,And when I click\Non that, again,
Dialogue: 0,0:07:11.79,0:07:14.09,Default,,0000,0000,0000,,it gives me that\Nsample text here.
Dialogue: 0,0:07:14.09,0:07:16.98,Default,,0000,0000,0000,,This is very similar\Nto what we did before.
Dialogue: 0,0:07:16.98,0:07:19.33,Default,,0000,0000,0000,,I'm going to click up, and
Dialogue: 0,0:07:19.33,0:07:21.50,Default,,0000,0000,0000,,we're going to\Nkick over 1,
Dialogue: 0,0:07:21.50,0:07:29.61,Default,,0000,0000,0000,,2, 3, 4, 5, and then 6.
Dialogue: 0,0:07:29.61,0:07:31.07,Default,,0000,0000,0000,,I'm making sure to not
Dialogue: 0,0:07:31.07,0:07:33.84,Default,,0000,0000,0000,,include this last\None, this sumofitems.
Dialogue: 0,0:07:33.84,0:07:35.25,Default,,0000,0000,0000,,And then just\Nlike last time,
Dialogue: 0,0:07:35.25,0:07:36.15,Default,,0000,0000,0000,,we're going to delete out
Dialogue: 0,0:07:36.15,0:07:37.28,Default,,0000,0000,0000,,that question mark,\Nthat last comma.
Dialogue: 0,0:07:37.28,0:07:38.79,Default,,0000,0000,0000,,We're going to\Nread through
Dialogue: 0,0:07:38.79,0:07:40.50,Default,,0000,0000,0000,,it really quickly just\Nto avoid an error.
Dialogue: 0,0:07:40.50,0:07:42.82,Default,,0000,0000,0000,,We've got a new\Nvariable, meanofitems.
Dialogue: 0,0:07:42.82,0:07:44.84,Default,,0000,0000,0000,,It's going to be\Nthe mean of item 1,
Dialogue: 0,0:07:44.84,0:07:47.26,Default,,0000,0000,0000,,2, 3, 4, 5, and 6.
Dialogue: 0,0:07:47.26,0:07:51.13,Default,,0000,0000,0000,,I'm going to\Nclick OK. SPSS
Dialogue: 0,0:07:51.13,0:07:53.90,Default,,0000,0000,0000,,again showed me the\Nsyntax of what it did.
Dialogue: 0,0:07:53.90,0:07:55.70,Default,,0000,0000,0000,,I'm going to\Nminimize that.
Dialogue: 0,0:07:55.70,0:07:58.08,Default,,0000,0000,0000,,And then here we have\Nthe mean of items.
Dialogue: 0,0:07:58.08,0:08:00.01,Default,,0000,0000,0000,,And if we really\Nquickly look at this,
Dialogue: 0,0:08:00.01,0:08:01.99,Default,,0000,0000,0000,,I'm going to pick this\None, for example,
Dialogue: 0,0:08:01.99,0:08:03.70,Default,,0000,0000,0000,,we've got 1,
Dialogue: 0,0:08:03.70,0:08:06.11,Default,,0000,0000,0000,,1, 3, 3, 1, 2,
Dialogue: 0,0:08:06.11,0:08:07.71,Default,,0000,0000,0000,,and a mean of 1.83 would,
Dialogue: 0,0:08:07.71,0:08:09.98,Default,,0000,0000,0000,,just eyeballing\Nit, make sense.
Dialogue: 0,0:08:09.98,0:08:11.58,Default,,0000,0000,0000,,If we look at this one,
Dialogue: 0,0:08:11.58,0:08:13.59,Default,,0000,0000,0000,,3.67, 2,
Dialogue: 0,0:08:13.59,0:08:15.64,Default,,0000,0000,0000,,3, 5, 4, 5, 3,
Dialogue: 0,0:08:15.64,0:08:16.99,Default,,0000,0000,0000,,that would roughly\Nmake sense
Dialogue: 0,0:08:16.99,0:08:18.65,Default,,0000,0000,0000,,without having to\Ndo the math of it,
Dialogue: 0,0:08:18.65,0:08:21.31,Default,,0000,0000,0000,,but this has computed\Nthe average score,
Dialogue: 0,0:08:21.31,0:08:24.45,Default,,0000,0000,0000,,the mean score for all\Nsix of those items.
Dialogue: 0,0:08:24.45,0:08:26.59,Default,,0000,0000,0000,,So that is very\Nquickly how to
Dialogue: 0,0:08:26.59,0:08:28.81,Default,,0000,0000,0000,,compute a new\Nvariable in SPSS.
Dialogue: 0,0:08:28.81,0:08:30.41,Default,,0000,0000,0000,,This is\Nparticularly useful
Dialogue: 0,0:08:30.41,0:08:32.19,Default,,0000,0000,0000,,when you have\Ncollected data using
Dialogue: 0,0:08:32.19,0:08:34.61,Default,,0000,0000,0000,,a pre-existing measure\Nand that measure has
Dialogue: 0,0:08:34.61,0:08:36.31,Default,,0000,0000,0000,,instructed you to compute
Dialogue: 0,0:08:36.31,0:08:38.51,Default,,0000,0000,0000,,the sum of items and\Nrun your tests on that,
Dialogue: 0,0:08:38.51,0:08:39.93,Default,,0000,0000,0000,,or maybe the mean of items
Dialogue: 0,0:08:39.93,0:08:41.45,Default,,0000,0000,0000,,and run your\Ntests on that.
Dialogue: 0,0:08:41.45,0:08:43.13,Default,,0000,0000,0000,,But this is a useful way
Dialogue: 0,0:08:43.13,0:08:44.45,Default,,0000,0000,0000,,of understanding\Nhow to create
Dialogue: 0,0:08:44.45,0:08:48.19,Default,,0000,0000,0000,,new variables using\Nexisting ones in SPSS.