Representing Data Answers

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1
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You think that $39,500 is a good salary and are interested in a job with Fast Pax. What other information might you want to know about Fast Pax salaries, and why?

Answer:

I would want to know the range of salaries, the minimum and maximum salaries, whether the minimum is an entry-level salary, and how the salaries are distributed. I would also want to know whether a few very high salaries make the average higher than what most employees earn, because that would help me determine whether $39,500 is typical and whether it is a good salary for the position.

2
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Which of the following did you include in your response? Check all of the boxes that apply.

A
the range, or spread, of the salaries
B
whether most people make a very low salary and one or two people make a high salary
C
the minimum salary, and whether that is an entry level or starting salary
D
the maximum salary
E
whether the maximum salary is a lot higher than the average and other salaries are a lot lower than the mean
3

Study the graph carefully. Which of the following statements is true?

A
The graph is drawn correctly.
B
The titles are misleading.
C
The intervals are not the same width.
D
The graph does not start at 0.
5

Which type of graph would be most appropriate to display this data?

A
a histogram
B
a pie chart
C
a box-and-whisker plot
D
a stem-and-leaf plot
6

Question text not available

Answer:

The data is skewed to the right. The right whisker is long, the left whisker is short, and the median is not in the middle of the box.

7

Which of the following did you include in your answer? Check all of the boxes that apply.

A
The data is skewed.
B
The right whisker is long.
C
The median is in the middle of the box.
D
The left whisker is short.
8

The report mentioned that the average salary is $39,500. Based on the report about salary, what would you say to someone who wants to work for Fast Pax?

Answer:

The salary data is strongly skewed, so the mean of $39,500 may not represent what a typical employee earns. The median salary is about $20,000, and roughly 75% of employees earn less than $25,000 annually.

9

Which of the following did you include in your response? Check all of the boxes that apply.

A
The data is skewed, so the mean is not a good measure of the data.
B
A median of $20,000 is probably a better indicator of the salary you would earn.
C
75% of all employees make less than $25,000 annually.

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