Question

The following table shows the number of hours some high school students in two towns spend riding the bus each week:

Answer 1

IQR = Q3 - Q1

total amount of people in Town A = 5 +3+9+4+20+9+5+7+6 = 68

Divide these into 4 groups(68/4 = 17): so Q1 =17, Q2 = 34, Q3 = 51 and Q4 = 68

IQR = Q3 - Q1 = 51 - 17 = 34

IQR =Q3 -Q1

Total amount of people in town B = 8+8+3+5+5+6+3+9+9 = 56

Divide these into 4 groups(56/4 = 14): so Q1 = 14, Q2 = 28, Q3 = 42, Q4 =56.

IQR = Q3 - Q1 = 42 - 14 = 28