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Which measurement levels are defined for the variables created in SPSS?

INSTRUCTIONS TO CANDIDATES

Variables in SPSS

Question A

Which measurement levels are defined for the variables created in SPSS? Only one option is correct

☐Text or numbers

☐Nominal, ordinal, interval and ratio

☐Categorical and continuous

☐Nominal, ordinal and scale

Question B

What was the correlation coefficient that described the relationship between the number of lectures one has attended and grades?

Now it's your turn to conduct a Pearson's correlation analysis! The data set you will start from is depicted here. First you have to create the variables in the "variable view", and then you have to plot the numbers into the "data view" tab. The data is fictitious and is about how many lectures you have attended (from 0 to 10), and what grades you have received in the subject (from 1-6). Download dataset:

SPSSdatasett ANOVA og uavhengig t-test

☐0.57

☐0.23

☐0.81

☐0.41

☐0.98

☐0.87

☐0.33

☐0.39

Question C

Was the correlation statistically significant?

☐Yes

☐No

Question D

Can we claim that the mood changes statistically significantly in winter, compared to summer?

☐Yes

☐no

Question E

If we were to report the results in APA style, we would have had to state the t-value (t), the degrees of freedom ( df ) and the p - value ( sig. ( 2-tailed)). Mark the option that best matches your results

☐t= 5.44, df = 19, p= 0.004

☐t=0.435, df = 19, p= 0.669

☐t=0.000, df =19, p= 1.234

☐t=6.543, df = 20, p= 0.032

☐t=0.9, df =19, p= 0.433

☐t= 19.324, df =44, p= 0.034

☐t=7.984, df =22, p= 0.002

☐t= 2.454, df = 22, p= 0.04

SPSS Problem 2: t-test

Question F

Time to run a t-test! We continue to play with the data set about lectures and grades, but as you can see we have now added a grouping variable at nominal level, as well as the ID number (the ID number is not really important for the analysis, but fine for the sake of overview).

☐5.0

☐4.4

☐3.6

☐4.2

☐4.1

☐2.2

☐3.1

☐5.4

Question G

Based on Levene's test, can we conclude that the groups have approximately equal variance?

☐no

☐Yes

Question H

Is there a statistically significant difference between the average grade for 1st grade compared to 2nd grade?

☐Yes

☐no

Question I

What was the p-value?

☐0.001

☐0.965

☐0.186

☐0.002

☐0.081

☐0.235

☐0.041

☐0.00

SPSS Problem 3: one-way ANOVA

This time you will carry out a one-way ANOVA in SPSS. You have already prepared the data set - we use the data on grades and attendance at lectures. Since we have three groups here - first class, second class and third class - ANOVA is fine. The question is: is there a significant difference in grades between the groups? (Don't worry about the lecture variable) Set up a one-way ANOVA with the variable Year level as grouping variable (factor). Remember to check the box for variance test under "options", as well as Bonferroni-corrected post-hoc analyzes under "Post Hoc...".

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