Question

The following temperatures were recorded in Pasadena for a week in April: 87, 85, 80, 78, 83, 86, 90. Determine the interquartile range

Answer 1

first, we put them in order

78,[80],83,(85),86,[87],90

Q1 = 80
Q2 (median) = 85
Q3 = 87

Interquartile range (IQR) = Q3 - Q1 = 87 - 80 = 7 <==

Answer 2

first, we put them in order

78,[80],83,(85),86,[87],90

Q1 = 80
Q2 (median) = 85
Q3 = 87

Interquartile range (IQR) = Q3 - Q1 = 87 - 80 = 7 <==