# Search results

1. ### Comparing withdrawal rates for a course

Thanks every one. You’ve been such a great help!
2. ### Comparing withdrawal rates for a course

Excellent. Thank you for confirming what I thought it was.
3. ### Comparing withdrawal rates for a course

Hello!! Which statical test should I use to compare withdrawal rates for a course for two semesters. I know I can report the means but need to know if the difference is significant. For example: Fall2017 10 out of 33 students withdrew Spring2018 5 out of 66 students withdrew Thank you in...

5. ### Which test to use to compare means for normal and non normal data

I am not sure what you mean by your first question. However, see the histogram and other descriptive statistics. Thanks so much for your help! I am looking up the Welch test. I don't recall learning about that!
6. ### Which test to use to compare means for normal and non normal data

Hi! I have quantitative test scores I wish to compare. However, one group (n=27) is not normally distributed and the other one (n=21) is normal. Thank you
7. ### Which test should I use?

Thank you thank you :)
8. ### Which test should I use?

I am just getting back to my CPU. I just realized I did not do the Mann Whitney test for Blended and Web. I ran one of the pairs twice by mistake. See the results from the Blended/Web comparison on pg 3 in the attachment. The results are the same as the output from the T test. I am happy...
9. ### Which test should I use?

My sample was not picked, I had to get students from my courses to volunteer to participate. I was happy to have all of them participate but some were under 18 years old at the time and by law couldn't. Also, some student dropped out of the course and did not take the final exam. I think I...
10. ### Which test should I use?

LOL! I just had to do a recap:) But glad you remembered my story. I liked and agreed with what you said "General in statistics you don't say that both groups are equal, you only say that the difference between the groups is not big enough to be counted as significant." That makes sense to me...
11. ### Which test should I use?

Greetings again. I hope you are able to help me again. I would really appreciate it. Just to refresh your memory, I have a blended, f2f and web course that all learned from diff. settings but took a f2f final exam. I wish to find out which setting performed better on the final. The blended...
12. ### Which test should I use?

Thanks so much!! That clear it up. I can proceed :) Have a good night:)
13. ### Which test should I use?

This is some helpful info! See the attached. I sent the box plot too.
14. ### Which test should I use?

Thanks for your reply. That website is so helpful. It did not work using internet explorer, but worked with Mozilla Firefox. After entering that data, it did test not normal. I also checked the data for my other 2 settings and they tested normal. So, just to make sure I understood your first...

16. ### Which test should I use?

Hello! Thanks for your reply, Yes, all three environments were independent groups and the data contained scores like 0 to 100. Using the the Shapiro-Wilk’s test (p > .05)), the z value computed at -1.98 which is not between + - 1.96 so it proved to be left skewed. The visual box plot also...
17. ### Linear Regression

See the attached file. I hope you don't mind that I sent you an overview of my study and findings. I am concerned that maybe the data count for web (n=18) was too small to do the linear regression test. I am also concerned that I should have not ran the linear regression on the f2f data...
18. ### Linear Regression

1) What should a sample size at least be, in order to run a linear regression test? Would 18 be too small? 2) Also, can I perform a linear regression test on data that is left skewed. 3) I ran a linear regression test on data that was normal and all seemed to go well, testing signf. However...
19. ### Which test should I use?

I wish to compare test scores from 3 different learning environments (online, f2f and blended) to see which setting preformed better on the common exam the took. The sample size and distribution is: online n=18 (normal), f2f n=27 (left skewed) and blended n=43 (normal). Which statistical test...