Work with Variables

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Work with Variables

• Section 5

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Add a variable

• Click on the top grey portion of the GPA column
  to highlight the column. At the top left of your
  screen, select Edit gt Insert variable.

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• At the bottom left of your screen, select
  Variable View. Double click on VAR00001 (it will
  turn blue) and type Year to give the new
  variable (Year Level) a name.
• Move over to the Values column, click on the cell
  and then on the 3 dots shaded in grey. Type 1
  in the Value box and Freshman in the Label box.
  Select Add. Type 2 and Sophomore. Select
  Add. Type 3 and Junior. Select Add. Type 4
  and Senior. Select Add gt OK.

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• At the bottom left of your screen, select Data
  View.
• Click in the Year column of line 1, select the
  down arrow then select Freshman.

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You have just finished entering the Year Level
for your first participant.

• Participant _1_
• Gender M F Age _23_ Year Fr
• Current GPA _3.2_ High School GPA _3.11_
• On a scale of 1 to 10, how confident are you that
  you will learn statistics?
• 1 2 3 4 5 6 7 8
  9 10
• Not at All Very
• How many years of computer experience have you
  had? _5_

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Now enter the Year Level for the other 9
participants (these are the same surveys).

• Participant _2_
• Gender M F Age _25_ Year So
• Current GPA _3.0_ High School GPA _2.9_
• On a scale of 1 to 10, how confident are you that
  you will learn statistics?
• 1 2 3 4 5 6 7 8
  9 10
• Not at All Very
• How many years of computer experience have you
  had? _2_

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• Participant _3_
• Gender M F Age _31_ Year Sn
• Current GPA _2.7_ High School GPA _2.5_
• On a scale of 1 to 10, how confident are you that
  you will learn statistics?
• 1 2 3 4 5 6 7 8
  9 10
• Not at All Very
• How many years of computer experience have you
  had? _15_

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• Participant _4_
• Gender M F Age _27_ Year Ju
• Current GPA _3.9_ High School GPA _3.6_
• On a scale of 1 to 10, how confident are you that
  you will learn statistics?
• 1 2 3 4 5 6 7 8
  9 10
• Not at All Very
• How many years of computer experience have you
  had? _4_

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• Participant _5_
• Gender M F Age _27_ Year So
• Current GPA _3.11_ High School GPA _3.2_
• On a scale of 1 to 10, how confident are you that
  you will learn statistics?
• 1 2 3 4 5 6 7 8
  9 10
• Not at All Very
• How many years of computer experience have you
  had? _8_

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• Participant _6_
• Gender M F Age _22_ Year Fr
• Current GPA _3.0_ High School GPA _3.4_
• On a scale of 1 to 10, how confident are you that
  you will learn statistics?
• 1 2 3 4 5 6 7 8
  9 10
• Not at All Very
• How many years of computer experience have you
  had? _2_

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• Participant _7_
• Gender M F Age _21_ Year Sn
• Current GPA _3.5_ High School GPA _3.8_
• On a scale of 1 to 10, how confident are you that
  you will learn statistics?
• 1 2 3 4 5 6 7 8
  9 10
• Not at All Very
• How many years of computer experience have you
  had? _9_

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• Participant _8_
• Gender M F Age _28_ Year Ju
• Current GPA _2.22_ High School GPA _2.7_
• On a scale of 1 to 10, how confident are you that
  you will learn statistics?
• 1 2 3 4 5 6 7 8
  9 10
• Not at All Very
• How many years of computer experience have you
  had? _5_

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• Participant _9_
• Gender M F Age _21_ Year Sn
• Current GPA _2.9_ High School GPA _3.1_
• On a scale of 1 to 10, how confident are you that
  you will learn statistics?
• 1 2 3 4 5 6 7 8
  9 10
• Not at All Very
• How many years of computer experience have you
  had? _1_

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• Participant 10_
• Gender M F Age _27_ Year Sn
• Current GPA _3.3_ High School GPA _3.1_
• On a scale of 1 to 10, how confident are you that
  you will learn statistics?
• 1 2 3 4 5 6 7 8
  9 10
• Not at All Very
• How many years of computer experience have you
  had? _7_

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Your Data View file should look like this -
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Move a variable

• Click on the top grey portion of the Year column
  to highlight the column.
• Press and hold a Left click then use your mouse
  to move the cursor to in between the Gender and
  Age columns.
• Drop (stop pressing the Left click) the Year
  column.

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Recode Variables

• The Confidence variable indicates students'
  responses to the question On a scale of 1 to 10,
  how confident are you that you will learn
  statistics? Their responses are currently Scale
  data (1 10). To make a comparison of the
  participants who answered with a low, medium, or
  high response, you can create groups (Nominal
  data).

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• Select Transform gt Recode gt Into Different
  Variables.
• Highlight the Confidence question on the list and
  click on the arrow to move Confidence into the
  Input Variable box.
• Type ConfLoHi in Output Variable Name. Click
  on the Change button.

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• Select Old and New Values. Under Old Value,
  select Range.
• Type 1 in the top box and 3 in the box under
  through.
• Type 1 in the Value box under New Value.
  Click Add.
• Type 3 in the top Range box under Old Value
  and 6 in the lower box.
• Type 2 in the Value box under New Value.
  Click Add.
• Type 7 in the top Range box under Old Value
  and 10 in the lower box.
• Type 3 in the Value box under New Value.
  Click Add.

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• Click on Continue gt OK
• The new variable will appear at the right hand
  side of your current variables.

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• At the bottom left of your screen, select
  Variable View
• Go to line 9 (ConfLoHi) and move over to the
  Values column. Click on the cell and then on the
  3 dots shaded in grey. Type 1 in the Value box
  and Low in the Label box. Select Add. Type 2
  and Medium. Select Add. Type 3 and High.
  Select Add

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• Select OK