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Home > Mathematics > General Mathematics > HSC Course > Data Analysis > DA5: Interpreting sets of data > Quick quiz: A sample of multiple choice questions for this topic.

DA5

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1. The mean of this set of scores 3, 4, 5, 5, 6, 7, 8, 10 is:

2. The median of this set of scores 1, 2, 2, 2, 3, 4, 5, 6, 7 is:

3.	An accountant listed the hourly rates of pay of five workers: $8.15 $8.90 $6.30 $22.10 $15.40 What is the median wage rate?

4.	Find the range of this set of scores 20, 42, 53, 62, 75, 89, 45, 19, 77, 85, 100

5.	Find the interquartile range of these 12 scores: 10, 12, 12, 15, 16, 17, 18, 19, 19, 21, 21, 22

6.	Find the mean and standard deviation of this set of scores: 19, 23, 16, 20, 18, 25, 20, 22, 15. Correct to 2 decimal places

Use the following box and whisker plot for questions 7, 8 and 9.

box and wisker plot

7.	This box-and-whisker plot shows a representative sample of the time customers at "Ahmad's Take-away" were required to wait before their meal was ready. The box in the diagram represents the interquartile range. In this diagram, 50% of the customers waited from:

8.	The time of 22 minutes (indicated by +) is very different from the others. It is called:

9. From the diagram the median is

10. Which graph shows a positively skewed distribution?

11. In this diagram

graph mean to left of mode

12.

Narelle and Lesley are two test item writers who are being considered for an important job. In this back-to-back stem and leaf plot the number of items written per hour were recorded.

Narelle	Lesley

Leaf	Stem	Leaf
7 4 2	0 1 2	2 3 5 1 2

Which test item writer produced the most items over the 5 hours?

13. The median score for Test A was approximately

box and wisker plots for tests A and B

14. Using the diagram in Q13, what was the lowest score on Test B?

15.

What was the total population surveyed?

	Men	Women	Total
Smoker	2500	1400	3900
Non-smoker	6500	7600	14 100
Total	9000	9000	18 000

16.	Using the two-way table in Q15 what percentage of the women are non-smokers?

17. Which diagram best illustrates an area chart?