Quiz

Statistics and Data quiz

Choose the statistic that answers the question. The mean is useful for a typical value, while range and standard deviation describe spread.

Practise this topic Pupil practice hub

Choose difficulty

Pick how hard you want the quiz to be. The answer choices are in the question section below.

Difficulty

Multiple choice quiz

Read each question, then choose one answer.

Question 1

For a whole-population data set, the sum of squared deviations is 104 and there are 11 values. Calculate the population standard deviation using σ = √(104 ÷ 11).

Standard deviation values

Sum of squared deviations	104
Number of values	11

Choose one answer

3.0710.29.4510.4

Question 2

Read the lower quartile from the boxplot.

Journey times

Choose one answer

2216530

Question 3

A data set has lower quartile 20 and upper quartile 32. Calculate the interquartile range.

Choose one answer

3252612

Question 4

A five-number summary is 4, 10, 16, 22, 30. Which description constructs the correct boxplot?

Choose one answer

Whiskers at 4 and 30; box from 10 to 16; median at 22Whiskers at 4 and 22; box from 10 to 30; median at 16Whiskers at 10 and 22; box from 4 to 30; median at 16Whiskers at 4 and 30; box from 10 to 22; median at 16

Question 5

Describe the correlation shown by the scattergraph.

Context scattergraph

Choose one answer

Correlation proves one variable causes the otherThe range is the highest value onlyNo correlation; there is no clear trendPositive correlation; as one value increases, the other tends to increase

Question 6

Two groups have the same mean reaction time. Group A has standard deviation 3 and Group B has standard deviation 6. Which group has values that are more spread out?

Spread comparison

Group A standard deviation	3
Group B standard deviation	6

Choose one answer

Group BThe mean decides the spreadGroup AThey have the same spread