Exam (elaborations)
SPSS command 2 commands
- Course
- Institution
SPSS command 2 elaboration of exercise test with commands
[Show more]
Seller
Follow
Anoniem21
Reviews received
Content preview
SPSS Deeltentamen 2Investigating Influence variabels
A: SETTING UP HYPOTHESES
Vraag A1: What would be the correct null and Alternative Hypoteses?
A null hypothesis is always that there is no (significant) difference.
An alternative hypothesis is always that there is a difference. In this case, you expect men to
have a higher satisfaction than women, so it is a one-sided alternative hypothesis.
Vraag A2: Are we testing our hypothesis one-sided or two-sided
A hypothesis is not always one-sided or always two-sided, it depends on your hypothesis.
If you think that there is a general difference (so men are happier OR women are happier),
then it is two-sided.
In this case you give a direction to your hypothesis, you expect a specific outcome (men are
happier than women, not the other way around), so it is a one-sided hypothesis.
Vraag A3: look at the descriptives of life statisfaction for men and woman separately. What are
their means and standard deviations?
Data > Split File. Select “organize output by groups” and then choose "Groups based on >
Gender"
Then go to Analyze > Descriptives Statistics > Descriptives and look at the descriptive
statistics.
! IPV kiezen voor geslacht kies je voor satisfaction.
B: TESTING HYPOTHES BY USING A T-TEST (COMPARING TWO MEANS)
Vraag B1: Are we going to run a dependent or an independent t-test?
The two groups (men and women) do not influence each other. It's also not the same group
over time. Since the two groups are not related, it's an independent t-test you're going to
use.
It does not matter whether the two variables (gender and satisfaction) are related! Because
you are going to test whether they influence each other or not.
Vraag B2: Now we are going to run the independent t-Test.
First: Make sure you turn off the ‘split file’. Go back to Data > Split file and then select
“analyze all cases, do not create groups”, and press paste and run the syntax code.
Next: go to Analyze > Compare Means > Independent-Samples T-Test.
As the test variable, you choose Satisfaction.
As the grouping variable, you select Gender.
Then press ‘define groups’. Here you give the two values of the grouping variable. If you look
at the ‘Variable view’ and then the values of Gender. You’ll see that men have the value 1
and women have the value 2. So in ‘Define groups’ you have to fill in a 1 and a 2.
Then press paste and run the syntax code.
Vraag B3: look at the P-value which conclusion can you draw about the null hypotheses?
We will only look in the line “equal variances assumed”
You can see that the reported 2-sided P-value is lower than 0.001. We have to divide the
reported P-value by 2, since we conduct a one-tailed hypothesis test.
In any case, the P-value is lower than the alpha (0.05). Therefore the effect is significant. This
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Anoniem21. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.03. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73091 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now