Practice
Statistics and Data practice
Practise statistics and data at your own pace. Choose a difficulty, try each question on paper or in your jotter, use hints only when you need a start, then show answers to check your work.
Build your confidence
Choose a difficulty and practice length, write down your working, then reveal answers only when you are ready to check. Hints give a starting point without giving away the answer.
Practice set
Current set: Mixed. Show your method for each question before checking answers.
1. Two groups have the same mean daily sales. Group A has standard deviation 2 and Group B has standard deviation 8. Which group has values that are more spread out?
Spread comparison
Group A standard deviation 2 Group B standard deviation 8 2. A shop records shoe sizes sold in one hour: 10, 8, 10, 13, 9, 10. What is the mode size?
Shoe sizes sold
Sale 1 10 Sale 2 8 Sale 3 10 Sale 4 13 Sale 5 9 Sale 6 10 3. Describe the correlation shown by the scattergraph.
Context scattergraph
4. Compare the boxplots. Which route is more consistent? Justify using interquartile range.
Journey-time comparison
5. 30 out of 120 survey responses chose cycling. Calculate the angle for the cycling sector of a pie chart.
Travel survey
Response Frequency Cycling 30 All responses 120 6. Use the weather line graph. Which conclusion is best supported?
Temperature this week
Read each point against the labelled vertical scale.
7. A school asks only pupils leaving the sports centre whether more PE should be offered. What is the main concern?
8. A shop records customers over five days. Find the range and choose the best description of the trend.
Shop customers
Read each point against the labelled vertical scale.
9. A pie chart shows that 40% of 200 pupils chose the bus for travel to school. How many pupils chose the bus?
Travel to school
40% bus
10. Two community survey data sets have the same mean. Use the table to compare spread. Which conclusion is correct?
Survey summary
Set A mean 42 Set A standard deviation 3 Set B mean 42 Set B standard deviation 8
Practice answers
Check your work when you are ready.