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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.

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Pupil practice

Build your confidence

Choose a difficulty and number of questions, write down your working, then reveal answers only when you are ready to check. Hints give a starting point without giving away the answer.

10 practice questions

Current set: Mixed. Show your method for each question before checking answers.

  1. 1. A scattergraph shows a positive correlation between revision hours and test score. Use the line of best fit to estimate the score for 4 hours of revision.

    Revision hours and test score

  2. 2. Two community survey data sets have the same mean. Use the table to compare spread. Which conclusion is correct?

    Survey summary

    Set A mean54
    Set A standard deviation4
    Set B mean54
    Set B standard deviation11

  3. 3. Use the household bills chart. Which comparison is correct?

    Monthly household bills

    Gas
    52
    Electricity
    66
    Water
    35

    Each bar is labelled with its value.

  4. 4. A shop records customers over five days. Find the range and choose the best description of the trend.

    Shop customers

    Read from left to right, then compare the values.

  5. 5. Use the temperature line graph. Find the largest increase between two consecutive times and describe the trend.

    Temperature over a day

    Read from left to right, then compare the values.

  6. 6. Two groups have the same mean delivery time. Group A has standard deviation 2 and Group B has standard deviation 6. Which group has values that are more spread out?

    Spread comparison

    Group A standard deviation2
    Group B standard deviation6

  7. 7. Weekly sales are 3, 5, 7, 10, 12. What is the median?

    Weekly sales

    Week 13
    Week 25
    Week 37
    Week 410
    Week 512

  8. 8. In a standard deviation table, the mean is 26. For x = 21, complete the row: x − mean and (x − mean)².

    One table row

    x21
    mean26

  9. 9. A pie chart shows that 25% of 80 pupils chose the bus for travel to school. How many pupils chose the bus?

    Travel to school

    25% bus

  10. 10. Describe the correlation shown by the scattergraph.

    Context scattergraph

Practice answers

Check your work when you are ready.