Unit 18 Section 4 : Comparing Data
In this section we consider how averages and the range can be used to compare sets of data.
Work out the answer to each of these questions then click on the button marked
to see whether you are correct.
Example Question 1
The two line diagrams below illustrate data that was collected about the scores of two groups of children in a short test.
(a) What is the mode for group A?
(b) What is the mode for group B?
(c) What is the range for group A?
(d) What is the range for group B?
(e) Which class did worse in the test?
(f) Which class had more varied results?
Example Question 2
Kathryn plants two different types of tomato plant. She records the number of
tomatoes that she picks from each plant every day for 10 days. Her records are
(a) Calculate the mean for Plant A
(b) Calculate the mean for Plant B
(c) Calculate the range for Plant A
(d) Calculate the range for Plant B
(e) Which plant produces more tomatoes on average?
(f) Which plant has the more consistent yield of tomatoes?
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You have now completed Unit 18 Section 4
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