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# statistics help watch

1. how to work out the sum of the squares of the deviations (SS) if we are given the number of observations and the variance?
2. (Original post by neverbeejail)
how to work out the sum of the squares of the deviations (SS) if we are given the number of observations and the variance?

I do not know how to tag him
3. (Original post by TeeEm)

I do not know how to tag him
ghostwalker
4. which chapter is your question from?
5. (Original post by Noory)
which chapter is your question from?
not from a chapter. im only give the variation and the sample size.

so variation say 20 and sample size 11, have to work out the ss
6. sorry i cant help since were are still doing chapter 9 in school
7. (Original post by Noory)
sorry i cant help since were are still doing chapter 9 in school
no problem, just worked it out

just had to rearrange s^2=ss/n-1 to make ss the subject

8. well done then

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