Unit 4
4 marks · EasyA pizza shop receives 40, 55, 38, 62, and 45 phone orders each day from Monday to Friday.
What is the median number of phone orders over the week?
Write the range of daily phone orders.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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(a) 45
(b) 24
Common mistakes: Not ordering data for median; Not subtracting lowest from highest for range
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Marking points
M1 (a) · 1 mark · Arranges data in order for median
A1 (a) · 1 mark · Median correctly identified as 45
M2 (b) · 1 mark · Finds highest and lowest values for range
A2 (b) · 1 mark · Range calculated as 24
Worked solution
a) Orders in order: 38, 40, 45, 55, 62. Median = middle value = 45.
b) Range = highest − lowest = 62 − 38 = 24.