Statistics Flashcards
1
Q
Mode
A
Number that occurs most frequently
2
Q
Weighted average
A
Proportion(group A average) + proportion(group B average) + …
3
Q
Variance
A
(Standard deviation)^2
4
Q
68-95-99.7 rule
A
Nearly all values lie within three standard deviations of the mean!
68% lie within 1 standard deviation
95% lie within 2 standard deviations
99.7% lie within 3 standard deviations
