Quartiles Worksheet
Complete the following questions on a separate sheet of paper.
I. For the following sets of data, find the
median or quartile 20
a) 6, 8, 11, 15, 24, 38
b) 11, -6, -2, 16, 9.-8, 17, 19
c) 6.4, 3.8, 59,4.7, 5.3, 7.1.3.2.
2. For the data below, find the median, and the upper and lower quartiles
Data
6, 47, 49, 15, 43, 41, 7. 39. 43. 41.36
Ordered data
Median
03
QI
3 A year ago, Angela began working at a computer store. Her supervisor asked her to keep a record of the
number of sales she made each month.
The following data set is a list of her sales for the last 12 months:
34, 47, 1, 15, 57, 24, 20, 11, 19, 50, 28, 37
Use Angela's sales records to find: a) the median
b) the upper and lower quartiles
c) the interquartile range​