Survey research and design in psychology/Tutorials/Psychometrics/Composite scores/Extra exercises

Exercise 2: Student satisfaction

 * Allen & Bennett Ch 2 (pp. 8-9) | .sav
 * Create a composite satisfaction score as the average of responses to these two items:

Items

Exercise 3: Quality of maths and english teaching
Francis 6.1 (pp. 167) | .sav
 * Create composite scores for the:
 * Quality of Maths Teaching (9 items)
 * Quality of English Teaching (8 items)
 * What is the correlation between these composite scores?

compute MathsTeaching = mean(maths1,maths2,maths4,maths5,maths6,maths7,maths8,maths9,maths10).
 * Syntax
 * computes a value for each participant, even if they have only one score

compute MathsTeaching = mean.3(maths1,maths2,maths4,maths5,maths6,maths7,maths8,maths9,maths10).
 * computes a value for each participant, as long as they have three or more scores

Go to Transform - Compute - Add name of new variable and create a formula, e.g,. MathsTeaching | mean(maths1,maths2,maths4,maths5,maths6,maths7,maths8,maths9,maths10)
 * Pull-down menus
 * computes a value for each participant, even if they have only one score

MathsTeaching | mean.3(maths1,maths2,maths4,maths5,maths6,maths7,maths8,maths9,maths10)
 * computes a value for each participant, as long as they have three or more scores