The range is the difference between the greatest and least values.
271.04, 279.11, 309.73, 363.38, 409.72 444.74, 603.46, 695.39, 871.96, 972.35
The difference between $972.35 and $271.04 is $701.31.
Interquartile Range
To find the interquartile range, we need to find the median of the lower half, the first quartile, and the median of the upper half, the third quartile.
Median_L
↓
271.04,279.11,309.73, 363.38, 409.72
Lower Half
Median_U
↓
444.74, 603.46,695.39, 871.96,972.35
Upper Half
The first quartile is $309.73 and the third quartile is $695.39. The difference between the two values is $695.39 - $309.73 = $385.66 .‬
Therefore, the interquartile range is $385.66 .‬
