1.2 Review of Variability Flashcards
1
Q
F-test is associated with?
A
a statistics known as analysis of variance
2
Q
Deviation Score Formula
A
DS= E(x-X) (line over the big X)
3
Q
what statistics are deviation scored the basis of?
A
Inferential Stats
4
Q
what do deviation scores demonstrate?
A
They demonstrate variability around the mean
However, deviation scores always sum to zero, so they do not provide a usable estimate of variability
One solution is to square the deviation scores before summing them up
5
Q
What are valid measures of Variability?
A
variance and the standard deviation
6
Q
what is variance?
A
the sum of the squared deviation from the mean divided by the sample size
7
Q
what is standard deviation
A
square root of the variance
