Examples of what pupils should know and be able to do
Use the mode and range in context in order to answer a question or problem. Use these to compare two sets of data. Interpret a comparative bar chart with up to two sets of data.
- Earnings - Rtf (rich text format) document (648Kb)
- FTM(P) Y456 p. 115 - Acrobat pdf document (40Kb)
- FTM(P) Y456 p. 117 - Acrobat pdf document (40Kb)
In an ice-skating competition the following scores were given: 3, 5, 5, 4, 4, 3; find the mean and range of this set of data.
Given a frequency table of the number of children in families, work out the mean number of children per family.
- Sita's Shoes - Rtf (rich text format) document (16Kb)
- Cards - Rtf (rich text format) document (112Kb)
- FTM(S) Y789 p. 256 - Acrobat pdf document (28Kb)
- FTM(S) Y789 p. 258 - Acrobat pdf document (24Kb)
- FTM(S) Y789 p. 260 - Acrobat pdf document (36Kb)
Probing questions
For a given graph, table or chart, make up three questions that can be answered using the information represented. What makes the information easy or difficult to represent?
The number cards shown below were chosen from a pack:
What is the value of a fifth card if:
- the mean of all the cards is 4?
- the range of all five cards is 3?
List a small set of data that has a mean of 5.
List a small set of data that has a mean of 5 and a range of 10.
List a small set of data that has a range of 12 and a mean of 6.
How did you work this out?
What if pupils find this a barrier?
Model the activity using a similar set of data. The following resources will also be useful:
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- Spr7 Unit 12 Section 3 pp. 401-403 - Acrobat pdf document (144Kb)
- Spr7 Unit 12 Section1 pp. 393-396 - Acrobat pdf document (156Kb)
- TL4Y7 Consolidation lessons Lesson 8 - Acrobat pdf document (36Kb)
- T5 Add-on 10 - Microsoft word document (328Kb)
- T5 Add-on 11 - Microsoft word document (360Kb)
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