Comparing Data Sets & Outliers (Year 9)
Free printable UK Year 9 (Key Stage 3) maths worksheet: compare 2 data sets using the mean and range, and investigate how an outlier affects the mean and the median.
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Grade 8 · Math worksheet
Name
Date
Math
Comparing Data Sets & Outliers
Compare 2 data sets using the mean and the range, and investigate how an outlier affects the mean and the median.
- 1.Dataset A: 19, 11, 2, 14, 38, 21, 21. Dataset B: 33, 20, 28, 28, 15. Which dataset has the higher mean?
- 2.Dataset A: 16, 34, 11, 29, 15, 3. Dataset B: 24, 19, 5, 23, 10, 23, 36. Which dataset has the higher mean?
- 3.Dataset A: 34, 26, 12, 40, 40, 29, 34. Dataset B: 34, 19, 28, 17, 31, 24. Which dataset has the higher mean?
- 4.Dataset A: 31, 10, 35, 9, 16. Dataset B: 37, 22, 32, 36, 26, 40, 3. Which dataset has the higher mean?
- 5.Dataset A: 14, 22, 14, 27, 14. Dataset B: 39, 37, 4, 17, 21, 18, 15. Which dataset is more consistent (has the smaller range)?
- 6.Dataset A: 22, 38, 24, 38, 20, 39. Dataset B: 40, 27, 4, 4, 26, 39. Which dataset is more consistent (has the smaller range)?
- 7.Dataset A: 33, 19, 19, 20, 23. Dataset B: 4, 34, 26, 36, 2. Which dataset is more consistent (has the smaller range)?
- 8.Dataset A: 12, 34, 11, 12, 17, 34, 29. Dataset B: 5, 39, 25, 40, 30, 36. Which dataset is more consistent (has the smaller range)?
- 9.A data set is 14, 25, 24, 26, 26, 63. The value 63 is an outlier. Find the mean and median with and without the outlier, and state which measure changes more when it is removed.
- 10.A data set is 27, 26, 11, 30, 27, 66. The value 66 is an outlier. Find the mean and median with and without the outlier, and state which measure changes more when it is removed.
- 11.A data set is 13, 15, 16, 18, 23, 59. The value 59 is an outlier. Find the mean and median with and without the outlier, and state which measure changes more when it is removed.
- 12.A data set is 10, 18, 29, 15, 16, 81. The value 81 is an outlier. Find the mean and median with and without the outlier, and state which measure changes more when it is removed.
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