# statistics the class that has had the greatest percentage increase

January 30, 2017

Question
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.

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A. Fr

B. So

C. Jr

D. Sr

Question 2 of 20

5.0 Points

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

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A. Gas

B. Electric

C. Water

D. None of the utilities

Question 3 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.

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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

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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 following stem–and–leaf diagram. The leaf unit is 0.1.

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How many bottles were sampled?

A. 9

B. 10

C. 15

D. 44

Question 5 of 20

5.0 Points

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

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A. Electric

B. Natural Gas

C. Water

D. None decrease from January to June.

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Question 6 of 20

5.0 Points

The data below are the numbers of hours of homework done as reported by 24 high school juniors for the last week in September, 2006. 6, 5, 6, 4, 6, 6, 9, 7, 6, 3, 8, 5, 5, 8, 6, 5, 8, 6, 5, 7, 5, 8, 7, 4 Using bins of 2 hours width, which relative frequency histogram represents the data?

A.

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B.

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C.

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D. None of the above

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Question 7 of 20

5.0 Points

The time series line chart below shows the prices of a volatile stock from January 1999 to December 1999. Between which two consecutive months did the price of the stock drop by the greatest percentage?

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A. June – July

B. August – September

C. May – June

D. None of the above

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Question 8 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.

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Which time series line chart represents the data?

A.

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B.

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C.

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D. None of the above

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Question 9 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.

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How many values are there less than 40?

A. 6

B. 8

C. 9

D. 5

Question 10 of 20

5.0 Points

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

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How many times did he roll an even number?

A. 17

B. 19

C. 25

D. 21

Question 11 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.

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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 12 of 20

5.0 Points

Identify the class that had the lowest percentage increase in 2.5 or better GPA’s between the fourth and fifth decades.

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A. Sr

B. Jr

C. So

D. Fr

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Question 13 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?

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A.

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B.

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C.

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D.

None of the above

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Question 14 of 20

5.0 Points

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

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A. 95, 91, 99, 101, 111, 115

B. 91, 95, 91, 109, 119, 115

C. 95, 99, 101, 101, 115, 115

D. 95, 99, 101, 109, 115, 115

Question 15 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.

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

A. 0

B. 6

C. 11

D. 25

Question 16 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 up to the next whole number.

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Approximately what percentage of the people aged 25–40 had a systolic blood pressure reading greater than or equal to 130?

A. 15%

B. 28%

C. 75%

D. 90%

Question 17 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.

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A.

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B.

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C.

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D. None of the above

Question 18 of 20

5.0 Points

Which line chart below represents the data?

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A.

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B.

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C.

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Question 19 of 20

5.0 Points

The following multiple line graph shows the numbers of death due to cancer in four geographic regions of the U.S. that occurred in three ethnic groups in 2003.

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In which geographic area was the number of cancer deaths among whites the highest in 2003?

A. Northeast

B. Midwest

C. South

D. West

Question 20 of 20

5.0 Points

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

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A. Sr

B. Jr

C. So

D. Fr

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