Statistical Analysis Lesson 2

Question 1 of 20

5.0 Points

Identify the class that has had the greatest percentage increase with respect to its initial percentage over the five decades.

A. Fr

B. So

C. Jr

D. Sr

Question 2 of 20

5.0 Points

A nurse measured the blood pressure of each person who visited her clinic. Following is a relative–frequency histogram for the systolic blood pressure readings for those people aged between 25 and 40. Use the histogram to answer the question. The blood pressure readings were rounded down to the next whole number.

Given that 600 people were aged between 25 and 40, approximately how many had a systolic blood pressure reading recorded as between 120 and 149 inclusive?

A. 48%

B. 250

C. 288

D. 300

Question 3 of 20

5.0 Points

Identify the utility that decreases as a percentage of the total utility bill from January to June.

A. Electric

B. Natural Gas

C. Water

D. None decrease from January to June.

Question 4 of 20

5.0 Points

A machine is supposed to fill juice bottles with 16 fluid ounces of juice. The manufacturer picks a sample of bottles that have been filled by the machine and determines the volume of juice in each bottle. The results are shown in the stem–and–leaf diagram below. The leaf unit is 0.1.

How many bottles had exactly 16 fluid ounces (to the nearest 0.1 ounce)?

A. 0

B. 6

C. 11

D. 25

Question 5 of 20

5.0 Points

Identify the class that has the greatest increase in 2.5 or better GPA’s over the five decades.

A. Sr

B. Jr

C. So

D. Fr

Question 6 of 20

5.0 Points

The table shows the price of a volatile stock from the months January 1999 through December 1999 as determined by the closing price on the last trading day of the month. The price is rounded to the nearest dollar.

Which time series line chart represents the data?

D. None of the above

Question 7 of 20

5.0 Points

Identify the utility that has its smallest percentage of the total bill in March.

A. Gas

B. Electric

C. Water

D. None of the utilities has its smallest percentage of the total bill in March

Question 8 of 20

5.0 Points

The data below represent the results of a poll in which the following questions was asked: “To what degree are you satisfied with your current health insurance?” Which pie chart below represents the given data set?

Very 14.5%

Somewhat 26.3%

Not at all 36.8%

No opinion 22.4%

A.

B.

C. Both represent the data.

D. Neither represent the data.

Question 9 of 20

5.0 Points

Find the original data from the stem–and–leaf plot.

A. 11, 18, 23, 23, 27, 33, 34, 38, 39, 43, 44

B. 2, 9, 2, 2, 4, 8, 4, 4, 6, 11, 12, 7, 8, 12

C. 13, 13, 14, 21, 21, 23, 27, 31, 31, 43, 44

D. 11, 18, 21, 21, 23, 27, 31, 33, 33, 38, 39, 43, 44

Question 10 of 20

5.0 Points

The histogram below shows the ages of the actors who won the Academy Award for best actor from 1970 to 2006.

How many of the award winners were 50 years old or older at the time they won their Oscar?

A. 6

B. 9

C. 15

D. 18

Question 11 of 20

5.0 Points

The bar chart shows the relative frequencies of winners of the Wimbledon women’s singles tennis title for 1976 – 1995.

How many titles did Graf and Navratilova win?

A. .75

B. 14

C. 15

D. 40

Question 12 of 20

5.0 Points

Which line chart below represents the data?

D. None of the above

Question 13 of 20

5.0 Points

The table shows the end–of–the–month checking account balance of a statistics teacher for the months January 1999 through December 1999 as determined by the closing balance on the last banking day of the month. The balance is rounded to the nearest dollar.

D. None of the above

Question 14 of 20

5.0 Points

Alan tossed a die 50 times and obtained the results shown in the dot plot below.

How many times did he roll an even number?

A. 17

B. 19

C. 25

D. 21

Question 15 of 20

5.0 Points

The stem–and–leaf diagram below shows the highest wind velocity ever recorded in 30 different U.S. cities. The velocities are given in miles per hour. The leaf unit is 1.0.

How many of the maximum wind velocities are 88 miles per hour or lower?

A. 2

B. 5

C. 11

D. 18

Question 16 of 20

5.0 Points

The stem-and-leaf plot below shows the weights in pounds of halibut caught on an Alaskan fishing boat for one day.

List all of the original weights.

A. 29, 31, 36, 37, 38, 40, 42, 43, 46, 47, 51, 52, 54, 60

B. 29, 31, 32, 36, 37, 38, 38, 40, 42, 43, 46, 47, 51, 54, 60

C. 29, 31, 32, 36, 37, 38, 40, 42, 43, 45, 46, 47, 51, 52, 54, 60

D. 29,31,32,36,37,37,38,38,40,42,43,43,45,45,46,47,51,52,54,60

Question 17 of 20

5.0 Points

Identify the utility that accounts for over half the total bill in two months.

A. Water

B. Electric

C. Gas

D. No single utility accounts for more than half the total bill in two months

Question 18 of 20

5.0 Points

A machine is supposed to fill juice bottles with 16 fluid ounces of juice. The manufacturer picks a sample of bottles that have been filled by the machine and determines the volume of juice in each bottle. The results are shown in the following stem–and–leaf diagram. The leaf unit is 0.1.

How many bottles were sampled?

A. 9

B. 10

C. 15

D. 44

Question 19 of 20

5.0 Points

The stacked bar chart below shows the percentages of death due to cancer in four geographic regions of the U.S. that occurred in three ethnic groups in 2003.

In which geographic area did Hispanics account for their highest percentage of cancer deaths in 2003?

A. Northeast

B. Midwest

C. South

D. West

Question 20 of 20

5.0 Points

The ages of employees of a company are summarized in the frequency table. Which line chart below represents the data?

D.

None of the above

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