I want to be sure I am using the correct statistics for pre vs post-test data. Any help is greatly appreciated. I need to know if the % correct post is statistically significant from the % correct pre and the effect size.

Example: Multiple choice question with 3 response (A,B &C). Answer B is the correct response. Here is the data that I have:

Number of responses to each answer choice in the pre-test (N=60)

A- 19

**B- 24**

C- 17

Number of responses to each answer choice in the post-test (N=55)

A- 5

**B- 44**

C- 6

The data cannot be matched from pre to post and the sample sizes is different between the two.

What is the best statistical test to compare pre vs post with the hypothesis that post-test scores will be higher? And how do I calculate an effect size? I do not have any statistical software so will need to use Excel or an online calculator.

Thank you!

Amanda