The dot plot below shows the hourly rate of some babysitters in a city: A number line is shown from 1 dollar to 7 dollars in increments of 1 dollar for each tick mark. The horizontal axis label is Dollar per hour. There are 4 dots above 4 dollars, 2 dots above 5 dollars, 3 dots above 6 dollars, and 1 dot above 7 dollars. The title of the line plot is Babysitting Rates.

Which statement best describes the shape of the data?

It is a cluster from $1.00 to $7.00 and has no gaps.
It is a cluster from $1.00 to $7.00 and has gaps.
It is not symmetric and has a peak at $4.00.
It is symmetric and has a peak at $7.00.
Question 8(Multiple Choice Worth 5 points)
(08.06 MC)

A teacher wants to find out the average number of weekly reading hours of her students. She noted the number of reading hours of 5 of her students, as shown below:

5, 2, 4, 8, 6

Which measure of central tendency is most appropriate for this situation, and what is its value?

Only the median; 5
Only the mean; 4
Either the mean or median; both are 5
Either the mean or median; both are 4
Question 9(Multiple Choice Worth 5 points)
(08.06 LC)

The following data set shows the number of books checked out from a library during the first two weeks of the month:

36, 39, 40, 42, 45, 2, 38, 41, 37, 38, 35, 37, 35, 38

Which of the following statements is true based on the data set?

There is one outlier, indicating very few books were rented out on that day.
There are two outliers, indicating very few books were rented out on those two days.
There is one outlier, indicating an abnormally large number of books were rented out on that day.
There are two outliers, indicating an abnormally large number of books were rented out on those two days.
Question 10(Multiple Choice Worth 5 points)
(08.01 MC)

Bill and Lisa are surveying their classmates about their summer reading. Their questions are given below:

Bill: How many books were recommended by the book reading club this month?
Lisa: How many books did you read from the recommended list?

Who wrote a statistical question and why?

Lisa, because there can be only one answer to the question
Bill, because there can be many answers to the question
Lisa, because there will be variability in the responses collected
Bill, because every student will give the same answer
Question 11(Multiple Choice Worth 5 points)
(08.05 LC)

Students in a school were asked to collect old bottles as part of a recycling drive. Some of the data recorded at the drive is shown in the histogram below:

A histogram is shown with title Recycle Drive Collection. On the horizontal axis the title is Number of bottles. The title on the vertical axis is Students. The range on the horizontal axis is 0 to 3, 4 to 7, and 8 to 11. The values on the vertical axis are from 0 to 10 at intervals of 1. The bar for the first range is till 3, the bar for the second range is till 6, the bar for the third range is till 1.

Which information is not provided in the histogram?

The number of students who collected exactly 2 bottles
The total number of students who collected bottles
The number of students who collected 4 or more bottles
The total number of students who collected 8 or more bottles
Question 12(Multiple Choice Worth 5 points)
(08.05 MC)

The following box plot shows the number of years during which 24 schools have participated in an interschool swimming meet:

A box and whisker plot is drawn using a number line from 0 to 10 with primary markings and labels at 0, 5, 10. In between two primary markings are 4 secondary markings. The box extends from 1 to 6 on the number line. There is a vertical line at 3.5. The whiskers end at 0 and 8. Above the plot is written Duration of Participation. Below the plot is written Years.

At least how many schools have participated for 1 year or less?

6 schools
8 schools
12 schools
14 schools
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FDK331.10