Sample size and calculation requirements of t tests Your book discussed ideal sample size as well as how to calculate a t test by hand. In this activity, you will remind yourself how the hand...

Sample size and calculation requirements of


t


tests

Your book discussed ideal sample size as well as how to calculate a
t
test by hand. In this activity, you will remind yourself how the hand calculation works and how the required calculation is related to your data points.

1. How could you calculate a
   t
   test if you were interested in change over time?


2. How could you calculate a
   t
   test if you were using a matched pairs design, using the variables already present? (i.e., gender).


3. Let’s say that you had a sample of 100 volunteers (you did not have access to the database identified on the picture). You are looking for husband–wife pairs.
   




1. 30 participants say they are not married.


2. 20 participants say they are in homosexual relationships.

• 30 participants said their spouse did not want to participate.

1. The remaining participants meet the eligibility requirements.

4. Given how the dependent samples
   t
   test is calculated, how many participants do you have left?