Descriptive Statistics Flashcards
(9 cards)
1
Q
Central Tendency
A
value is a number that represents an entire data set.
2
Q
Mean
A
arithmetic average
3
Q
Median
A
point that divides a rank-ordered data set in half
4
Q
Mode
A
score that occurs most often (there can be multiple modes)
5
Q
Variability
A
several measures of variability available include : standard deviation, range, Sum of squares, Variance
6
Q
Standard deviation
A
average variability around the mean
7
Q
Range
A
distance from the high score to the low score
8
Q
Sum of squares (SS)
A
sum of the squared deviations from the mean
9
Q
Variance
A
average of the SS
