Measures of Spread – Weebly
2_3MeasuresOfSpread.notebook April 29, 2013 Measures of Spread RANGE = the difference between the maximum value and the minimum value QUARTILE = divides a data set into four equal parts Q1 is the first quartile (25%) Q2 is the second quartile (50%) (this is the middle value in an ordered list... does this sound familiar?) Q3 is the third quartile (75%) INTERQUARTILE RANGE = Q3 Q1 VARIANCE = a measure of dispersion that is found by averaging the squares of the deviation of each piece of data ...
Recent Comments