emprical studies intro
how do you find mean
total / amount of scores
how do you find median
order scores and find the middle
how do you find mode
the one that come up the most times
how do you find range
max value - min value
how do you find interquartile range
75th percentile - 25th percentile
how do you find variance
(score1 - mean)squared + (score2 - mean)squared .... / n
how do you find standard deviation
square root of variance