Comparing data

Lesson details

Key learning points

1. In this lesson, we will interpret differences between the mean, median, mode and range.

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5 Questions

Q1.
The mean of the set of numbers 3, 3, 3, 4, 5, 6 is...
3
5
6
Q2.
The median of the set of numbers 3, 3, 3, 4, 5, 6 is...
3
4
5
Q3.
The mode of the set of numbers 3, 3, 3, 4, 5, 6 is...
3.5
4
5
Q4.
The range of the set of numbers 3, 3, 3, 4, 5, 6 is...
3.5
4
5
Q5.
Here is a set of numbers: 4, 5, 2, 1, 8. Tick the CORRECT statements
Correct answer: The mean is 4
The median is 2
The range is 6
Correct answer: There is no mode

2 Questions

Q1.
Here is a list of annual salaries at a company: £25,000, £25,000, £26,000, £26,000, £26,000, £27,000, £27,000, £28,000, £100,000. Why would the mean not be the most appropriate measure of average?
Because £26,000 comes up the most times so you should take the mode
Because the mean might give a decimal answer
Correct answer: Because the presence of an outlier (£100,000) skews the mean
Because there is an even number of pieces of data
Q2.
Samira asks a sample of her class their favourite colour. The results are: blue, pink, red, red, blue, pink, green, brown, red. Which of these averages would be the most appropriate to use?
Mean
Median