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Grade 12 · Mathematics · three levels

Grade 12 Statistics & probability worksheet in three levels

The same 20-question worksheet on statistics & probability in Support, Core and Challenge versions. Question by question, each version keeps the topic and changes the difficulty.

All three levels PDFAll three answer keysOriginal worksheet

Compare the three levels

Support

Easier questions on the same topics, for students who need more practice with the basics.

Questions
20 (20 medium)
Grade range
Grades 8 to 12
Topics
Statistics & probability

Sample questions

  1. Data: 26, 32, 38, 44, 50, 56, 62, 68. Using medians of the lower four and upper four values, find the interquartile range.
  2. Data: 45, 48, 51, 54, 57, 60, 63, 66. Using medians of the lower four and upper four values, find the interquartile range.
  3. Data: 29, 35, 41, 47, 53, 59, 65, 71. Using medians of the lower four and upper four values, find the interquartile range.

Core

Questions at the expected level for the grade.

Questions
20 (20 medium)
Grade range
Grades 8 to 12
Topics
Statistics & probability

Sample questions

  1. Data: 38, 43, 48, 53, 58, 63, 68, 73. Using medians of the lower four and upper four values, find the interquartile range.
  2. Data: 8, 19, 30, 41, 52, 63, 74, 85. Using medians of the lower four and upper four values, find the interquartile range.
  3. Data: 39, 42, 45, 48, 51, 54, 57, 60. Using medians of the lower four and upper four values, find the interquartile range.

Challenge

Harder questions on the same topics, for students who are ready to stretch.

Questions
20 (20 challenge)
Grade range
Grades 9 to 12
Topics
Statistics & probability

Sample questions

  1. A score of 30 occurs 10 times; a score of 6 occurs 4 times. Find the mean as a fraction or decimal.
  2. Find the population variance of 34, 42, 50, 58, 66. Divide by 5.
  3. A score of 12 occurs 8 times; a score of 12 occurs 3 times. Find the mean as a fraction or decimal.

Using the three versions

  • Start everyone with the same short explanation, then hand out Support, Core or Challenge.
  • Question numbers line up across the versions, so you can go through the answers with the whole class.
  • The PDF has a cover page and each version on its own pages; the answer keys PDF has all three keys.

See the original worksheet or browse more three-level worksheets.