Statistics Flashcards
1
Q
What is the formula for z-scores
A
Score - Mean / Standard Deviation
2
Q
How do you calculate the mean?
A
Sum of Scores / Number of Scores
3
Q
What are z-scores?
A
z-scores refer to the number of standard deviations above the mean
4
Q
What percentage of scores lie on one standard deviation of the mean?
A
68%
5
Q
What percentage of scores lie on two standard deviations of the mean?
A
95%
6
Q
What percentage of scores lie on three standard deviations of the mean?
A
99.7%
7
Q
How to find interquartile range?
A
Q3-Q1 = Upper Quartile - Lower Quartile
8
Q
Box Plots
A
https://www.simplypsychology.org/boxplots.html
