Independent T-Test on SPSS + Assumption Checks + Graph + APA Write Up

[@DavidRobinsonPhD]

T-tests and many other analyses are covered in my book, SPSS Made Easy: www.amazon.co.uk/SPSS-Made-Easy-Statistical-Researchers/dp/B0DJGR4Z5K

[@inayahali2972]

Thank you for the informative video. I wanted to know if there is any sample size requirement for doing Man-Whitney U Test. Is there any specific number of observations in each group that needs to be met before choosing this test. I would be glad for your help. Thanks!

[@DavidRobinsonPhD]

Hi Inayah, thanks for your question. There isn't a universally accepted minimum sample size. Technically, the test could be completed with just four observations, though larger samples are preferable as you increase the likelihood of detecting differences.

[@inayahali2972]

@DavidRobinsonPhD thank you heaps!

[@jiayi3846]

SAVIOR TATT Thank you Dr. Robinson.

[@DavidRobinsonPhD]

Thanks!

[@ranakayacan3859]

Thank you! It helped a lot :)

[@DavidRobinsonPhD]

Thanks, glad it helped!

[@frj2554]

Hi, Dr. Robinson. Should i report data from equal variance is not assumed row if the levene test is less than 0.05? The lower limit of confidence of interval is negative and upper is positive. Now, how to report the results in APA 7 format? Also, if the study's hypothesis is one tailed, the 2 tailed sig. must be halved, right? Thank you so much iin advance

[@mobolaayeni3067]

Hi, what if one group is not normally distributed?

[@DavidRobinsonPhD]

Hi, thanks for your question. You could consider doing a non-parametric equivalent, like the Mann-Whitney U test.