SPSS Data Sets & Univariate Analyses



Data Entry & Univariate Stats SPSS Hw

Walk-through -- we'll all work through the steps of this analysis together

The data set (shown below) includes the following variables (with values & labels for qualitative variables) …

subn -- unique number for each participant

age -- age in years (-9 means they didn't answer the item -8 means I didn't believe their answer)

hap -- rating of "happiness with their life" -- 1-10 scale (-9 means they didn't answer the item)

sat -- rating of "satisfaction with their life" -- 1-10 scale (-9 means they didn't answer the item)

bliss -- rating of the "blissfullness of their lie" -- 1-10 scale (-9 means they didn't answer the item)

spell -- score on a 20-item spelling test (-9 means they didn't take the test -8 means they didn't finish the test)

Here are the data

1 21 3 4 2 18

2 -9 4 8 5 -9

3 18 5 5 7 19

4 17 -9 -9 -9 20

5 21 8 9 7 12

6 -8 7 8 7 -8

Things to do…

1. Using the Variable View specify the attributes of each variable (be sure to use Labels and Values)

2. Using the Data View enter the data

3. Run a Frequencies for each variable and see what happens with the missing values

Do each of the following transformations -- do these one at a time!!

• Be sure to check if you got what you want by looking at the variable view & running a frequencies

• Be sure to male Labels and Values for each (mind-numbing at the time, but important later…)

4. Make "agegroup" that groups folks into those who are under vs. over 20 years old

5. Make "score" that is the sum of the hap, sat & bliss ratings

6. Make a "spellper" that is the % correct on the spelling test

7. Make "spelgrad" that divides spellper into passing (better than 70%) and failing

8. Make "hapgrp" that divides folks into those with score values less than 10, 11-20 and more than 20

9. Don’t forget to save the data set and syntax windows!

10. Get the mean, std, and SEM for all variables (entered and created) and enter those on the homework checker.

11. Following the example on the last page of the SPSS handout, make a “Table 1” for the following variables on the bottom of the next page: agegroup, spellper, spelgrad & hapgrp

Get freq, mean, std and sem for each variable (original and constructed). Tell for which variables the mean, std and sem are "meaningful" and give the interpretation of each.

Do not forget to print out the COMPLETED homework checker to verify you got the correct answers for this section. Failure to include this page with your homework assignment will result in the loss of points for this assignment. It is recommended that you copy over the numbers on to this page so that you have record of the correct answers, but this section will not be graded by your TA.

mean std SEM Can the mean from this type

of variable be interpreted?

subn

age

hap

sat

bliss

spell

agegroup

score

spellper

spelgrad

hapgrp

Table 1.

Following the instructions from number 11 above, do not forget to include a properly formatted table below.

Your Turn -- This time work in pairs to complete the following…

The variables include…

partnum -- number of each participant

mamls -- number of pets that are mammals (-9 -- they didn't answer, -8 -- I didn't believe their answer )

reps -- number of pets that are reptiles (-9 -- they didn't answer, -8 -- I didn't believe their answer )

fish -- number of pets that are fish (-9 -- they didn't answer, -8 -- I didn't believe their answer )

pethap -- rating of happiness with their pets (1-15 scale) (missing = -9)

petsmart -- score on a 30 item "pet care" quiz (-9 -- they take quiz, -8 -- didn't finish quiz )

data…

101 2 0 15 12 21

109 -9 -9 3 -9 -8

112 6 -8 -8 5 22

121 3 4 25 13 -9

122 4 3 2 12 28

124 4 5 1 15 27

132 0 0 12 -9 15

136 3 0 0 12 14

1. Enter the data with properly specified variables

2. Make "totpet" which is the total number of pets

For the following -- write the compute and/or recode you used.

3. Make "pet12" 1 = 10 or fewer pets 2 = 11 to 20 pets and 3 = more than 20 pets

4. Make "petper" as % of pets each person owns of the most pets anyone owns (think!)

5. Make "hapgrp" that splits folks into those with pet happiness ratings over vs. under 9

6. Make "petqper" as percent score on pet quiz

7. Make "replove" with 0 = owns no reptiles and 1 = owns at least one reptile

8. Get freq, mean, std and sem for each variable (original and constructed). Tell for which variables the mean, std and sem are "meaningful" and give the interpretation of each.

Do not forget to print out the COMPLETED homework checker to verify you got the correct answers for this section. Failure to include this page with your homework assignment will result in the loss of points for this assignment. It is recommended that you copy over the numbers on to this page so that you have record of the correct answers, but this section will not be graded by your TA.

mean std SEM Can the mean from this type

of variable be interpreted?

Partnum

mamls

reps

fish

pethap

petsmart

totpet

pet12

petper

hapgrp

petqper

replove

9. On other paper, compose a “Table 1” for the following variables: pet12, petqper, replove and pethap

-----------------------

Grading

Walk-through ______ 5

Computes and Recodes for "Your Turn" ______ 10

Stats & interpretations for "Your Turn " ______ 15

Table 1 for “Your Turn” ______ 10

Total Graded Points ______ - ______ (points lost - why?)

Assignment grade out of 40 points ________

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