Ouestion 1

The given data set is:

21

17

12

22

10

19

13

18

29

29

Find the median.

Find the mean. Round to one decimal place as needed.

Find the mode.

If the mode does not exist, please enter DNE.

If there are multiple modes, please separate them by space and in increasing order.

Ouestion 2

The highway mileage (mpg) for a sample of 8 different models of a car company can be found below. Find the mean, median, mode, and standard deviation. Round to one decimal place as needed. 20, 22, 26, 28, 29, 32, 35, 35 Mean = Median = Mode = Standard Deviation =

Question 3

Students in a statistics class took their first test. The following are the scores they earned. Fill in the stem-and-leaf plot below use the tens place as the stem and the ones place as the leaf. Describe the shape of the distribution.

55	58	61	62	62	65
70	73	78	79	79	79
81	83	83	84	86	89
89	90	92	95	96	96
97	98	98	99	99	99

a) Data were collected for ? 1 2 3 6 30 Select an answer quantitative or qualitative variable(s).

Is it appropriate to make a stem-and-leaf plot for this type of data and number of variables? ? no or yes .

b) Complete the stem-and-leaf plot below.

You must put commas between the leaves and the leaves must be in numerical order.

Stems	Leaves

Key: --------------- = 45

c) What shape is the stem-and-leaf plot above? Select an answer uniform right-skewed left-skewed bell-shaped

QUESTION 4

To analyze how Arizona workers ages 16 or older travel to work (carpool, private vehicle, public transportation, other), data from 20 workers were collected and are shown in the table below.

Carpool

Carpool

Carpool

Private

Private

Private

Public

Public

Private

Other

Carpool

Carpool

Other

Carpool

Public

Public

Carpool

Public

Carpool

Public

a) Since data were collected for ? 1 2 3 6 20 Correct Select an answer quantitatve qualitative Correct variable(s), the correct graph to make is a Select an answer histogram side-by-side bar chart scatterplot bar chart Correct .

b) Complete the frequency/relative frequency table.

Transportation Type	Frequency	Relative Frequency
Carpool
Private
Public
Other

QUESTION 5

Students in a statistics class were surveyed to see how many pets they own. Below are the results.

Click on the Data button shown below to display the data. Data

Number of Pets

1

3

1

1

0

2

0

1

2

2

1

0

1

0

3

1

2

0

1

4

3

2

1

4

0

(a) Since data were collected for a Select an answer qualitative quantitative continuous quantitative discrete variable(s), what is an appropriate graph to make?

• bar chart
• histogram
• 3D pie chart
• 2D pie chart

(b) Fill out the frequency and relative frequency distribution table.

Number of Pets	Frequency	Relative Frequency
0
1
2
3
4

(c) What proportion of students in this statistics class had at most two pets?