Range - the length of the smallest interval containing the data, soOriginally Posted bymlbg

its the difference between the largest and smallest value in the sample.

Quartile - one of the three values that divides the data into four intervalsHow do I identify the inter-quartile range?

each containing 25% of the data points. The first quartile cuts of 25%

of the points, the second quartile cuts of 50% of the points, also known as the median, third quartile cuts of 75% of the points.

Interquartile range is the difference between the third and first quartiles.What is the difference between the range and the interquartile range?

RonL