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Data Analysis and Presentation
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Data Analysis and Presentation
Calculate statistics, choose and create suitable displays, and use evidence to describe data. Show your working where appropriate.
Calculate and choose
1.Five students recorded their heights as 146 cm, 151 cm, 157 cm, 149 cm and 162 cm. Calculate the mean height. Show your working.
2.A student read 3, 7, 4, 6 and 9 books during the term. Find the median number of books read.
3.The shoe sizes in a group are 4, 7, 6, 7, 5, 7, 6. What is the mode?
- 4
- 5
- 6
- 7
4.A survey records how many students choose each favourite sport. Which display is generally most suitable for comparing the numbers in different sport categories?
- Bar graph
- Line graph
- Number line
- Scatter plot
Display and interpret data
5.These are daily step counts in hundreds: 5, 8, 6, 7, 6, 9, 6, 7. Make a dot plot on the number line. Label the scale and include one dot for each result.
6.Two groups completed the same quiz. Group K scored 11, 13, 15, 14 and 17. Group L scored 9, 12, 16, 15 and 18. Calculate the mean and median for each group, then state which group has the higher mean.
7.A set of values has a very large extra value added to it. Explain what is likely to happen to its mean and median, and identify which statistic is usually affected more.
8.A class asked 24 students which lunchtime activity they preferred. The results were: basketball 9, drawing 6, reading 5, and skipping 4. Write a two- or three-sentence conclusion that identifies the most popular activity and supports it with evidence.
2 printable pages
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