Checking Variance/Normality of my two Samples (question)

[johnsteam]

Hey all,

I am doing a project and I have to check if the variances of my two samples are equal.
I am doing an equal variance test and I got P-values of 0.002 for data set A and 0.212 for data set B.
I would like to know what my hypothesis could be (if possible form little information) and what the p values mean in terms of my hypothesis?

I also need to do a normality test and I got both P-values of > 0.05
What does this mean in relation to the distribution, how can I check if it is normally distributed by this confidence interval?


Thank you.

 

[Miner]

Re: Basic Variance/Normality question

The null hypothesis for the test for equal variances is that the variances are equal. The null hypothesis for the normality test is that the sample data come from a normally distributed population.

If your p-value is < than your alpha value, you reject the null hypothesis in favor of your alternate hypothesis.

Your alpha value typically ranges from 0.01 to 0.10, and is set by you based on the potential risks associated with a type I error. High risk uses 0.01, and low risk uses 0.10. Academia usually uses 0.05.

 

[johnsteam]

Re: Basic Variance/Normality question

Thank you very much, greatly appreciated.