Get the answers you need at Westonci.ca, where our expert community is always ready to help with accurate information. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently. Get immediate and reliable solutions to your questions from a community of experienced professionals on our platform.

A purposive sample of psychology graduate students finishing up their dissertation at one online university (n = 80), one public brick-and-mortar university (n = 35), and one private brick-and-mortar university (n = 20) rated overall satisfaction with their dissertation chair using a scale of 0 (completely dissatisfied) to 100 (completely satisfied). Each university had 100 students finishing up their dissertation. The mean satisfaction ratings were: online = 83.5, public brick-and-mortar = 92.7, private brick-and-mortar = 90.3. The standard deviations were equal. Which of the following pairwise comparisons of mean ratings would have the smallest effect size?
a. Public versus private
b. Public versus online
c. Online versus private
d. The effect size of each pairwise comparison would be equal


Sagot :

Answer: b. Public versus online

Explanation:

Considering that the standard deviation is the same for all groups, the effect size can be established by calculating which pair has the largest mean difference:

(M1 – M2) / SD

The mean difference for public versus private was 2.4., 9.2. for public versus online, and 7 for private versus online, meaning that public versus online would have the smallest effect size.