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7.07 Comparing data sets

Interactive practice questions

Marge grows two different types of bean plants. She records the number of beans that she picks from each plant for $10$10 days. Her records show:

Plant $A$A: $10,4,4,5,7,10,3,3,9,10$10,4,4,5,7,10,3,3,9,10

Plant $B$B: $8,7,5,5,9,7,8,7,5,6$8,7,5,5,9,7,8,7,5,6

a

What is the mean number of beans picked per day for Plant $A$A? Leave your answer to one decimal place if needed.

b

What is the mean number of beans picked per day for Plant $B$B?

c

What is the range for Plant $A$A?

d

What is the range for Plant $B$B?

e

Which plant produces more beans on average?

Plant B

A

Plant A

B
f

Which plant has a more consistent yield of beans?

Plant A

A

Plant B

B
Easy
3min

The stem and leaf plots show the number of books read in a year by a random sample of university and high school students. Which of the following statements are true?

I. Seven university students did not read any books.

II. The university median is equal to the high school median.

III. The mean is greater than the median in both groups.

Easy
2min

The Stem and Leaf plot shows the batting scores of two cricket teams, A and B

Easy
6min

The following column graphs show the season results of two soccer groups, Group A and Group B, and the number of games (frequency) in which they scored a certain number of goals (scores).

Easy
2min
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Outcomes

2.1.11

compare groups on a single numerical variable using medians, means, IQRs, ranges or standard deviations, and as appropriate; interpret the differences observed in the context of the data and report the findings in a systematic and concise manner

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