measures of variability Flashcards
(9 cards)
1
Q
dispersion
A
measures referring to the differences between situations
2
Q
range
A
measure of distance from the lowest to the highest score
3
Q
interquartile range
A
is obtained by discarding the upper 25% and the lower 25% of the distribution and taking the range of the remains
4
Q
first quartile (Q1)
A
the point that cuts off the lowest 25% of the distribution
5
Q
second quartile (Q2)
A
the median
6
Q
third quartile (Q3)
A
the point that cuts off the highest 25% of the distribution
7
Q
interquartile range
A
the difference between the first and third quartiles
8
Q
standard deviation
A
the positive square root of the variance
9
Q
coefficient of variation (CV)
A
the standard deviation divided by the mean
