# Standard Deviation

2 Questions

QUESTION 1 of 2

Hi! I am having problems with number 36 from our hw. For the sample variance, I am getting 4,292,520,442 when the answer says it is 429,252,044.2. And so I'm also getting the standard deviation wrong because of that one decimal point off. I don't know if I am putting it wrong in my calculator or what.

Thanks!

QUESTION 2 of 2

Hi professor,

I'm having some trouble with 9.7 / homework because I can't seem to figure out how to get SD difference. My calculator can't graph the work so I'm having trouble following your videos. On example 32. I can get the mean difference of 5.9 and the sample size of 10, but I cant figure out how to do Sd. (without looking into the video and seeing what you get.) . Is there any way you could possibly explain the process again to find the SD difference? Thanks.