(adsbygoogle = window.adsbygoogle || []).push({}); Calculating the variance with a TWIST!!!

Hello!! I am trying to understand this problem!! its just on my practice questions and Ihave the answer, I CAN NOT understand how to set it up!! PLEASE someon ehelpo!!!!!

THis is it :)

A student wants to calculate the variance of a set of 10 scores. But he doesnt have hte raw scores, but only has the deviation of each raw score from the mean. Worse yet he only has 9 of tese deviation scores...

compute the variance for him

-5, +11, -4, -2, +7, -8, -6, +1, -3

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Calculating the variance with a TWIST

**Physics Forums | Science Articles, Homework Help, Discussion**