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Mean, Median and Mode · Question 37 of 67

Question 37

EasyOriginal question

The mean height of five friends is 152 cm. For a photo, each of them stands on a 3 cm step. What is their mean height, measured from the floor, now?

Options for question 37

Show the answer and explanation
CorrectNot quiteAnswer D

Correct answer: D

Explanation

  1. Every height increases by 3 cm, so the mean increases by 3 cm.

  2. New mean = 152+3=155152 + 3 = 155 cm.

Worth noting

152.6 cm spreads a single 3 cm over the five people. Each of them gained 3 cm, so the mean gains the full 3 cm.

Concept
Adding a constant to every value
Typical time
40 s
Your time
—
The rule this testsWhen values change
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