Z Scores Flashcards
(9 cards)
1
Q
Z scores measure
A
the number of standard deviations a data point is away from the mean
2
Q
Z scores apply to
A
continuous variables where each case takes a particular value
3
Q
what do Z scores do?
A
help compare individual values in the same or across different distributions
4
Q
Z score formula
A
individual datapoint - mean of the variable / standard deviation
5
Q
Z scores measure 2
A
a datapoints distance from the mean in standard deviations
6
Q
are Z scores inherently normally distributed
A
no
7
Q
negative Z score
A
datapoint is smaller than the mean
8
Q
positive Z score
A
datapoint is larger than the mean
9
Q
standardisation
A
z scores provide a standard measure of distance from the mean allowing the comparison of values
