measures of variability Flashcards
1
Q
indication of how scores in a distribution are scattered or dispersed
A
variability
2
Q
statistics that describe the amount of variation in a distribution, quantification of the dispersion
A
measures of variability
3
Q
three measures of variability
A
range, standard deviation, variance
4
Q
difference between the highest and lowest scores, measures the spread of only the extreme scores
A
range
5
Q
tells how far away the raw score is from the mean of its distribution
A
deviation score
6
Q
symbol for the standard deviation of population scores
A
lowercase letter sigma
7
Q
symbol for the standard deviation of sample scores
A
S
8
Q
set of scores is just the square of the standard deviations
A
variance
