Question 1

Find the mean for the given sample data.
-The students in Hugh Logan's math class took the Scholastic Aptitude Test. Their math scores are shown below. Find the mean score.
614 598 353 354 541
355 340 539 470 482
A) 476.0
B) 464.6
C) 455.5
D) 474.1

Accepted Answer

To find the mean, add all the scores together and divide by the number of scores. The sum of the scores is 4646, and there are 10 scores. So, the mean is 4646/10 = 464.6.

Question 2

Find the median for the given sample data.
-2, 3, 8, 21, 30, 30, 49 Find the median for the data.
A) 21
B) 8
C) 30
D) 25.5

Accepted Answer

The median is the middle number in a sorted, ascending or descending, list of numbers. Here, the list is already sorted, and since there are 7 numbers, the median is the fourth number, which is 21.

Question 3

Find the median for the given sample data.
-A store manager kept track of the number of newspapers sold each week over a seven-week period. The results are shown below.
56, 18, 221, 189, 280, 244, 235
Find the median number of newspapers sold.
A) 221 newspapers
B) 189 newspapers
C) 178 newspapers
D) 235 newspapers

Accepted Answer

To find the median, first, arrange the data in ascending order: 18, 56, 189, 221, 235, 244, 280. The median is the middle number, which is 221 newspapers.

Question 4

Find the mean for the given sample data.
-Bill kept track of the number of hours he spent exercising each week. The results for four months are shown below. Find the mean number of hours Bill spent exercising per week. Round your answer to two decimal
Places.

A) 8.73 hours
B) 8.48 hours
C) 7.81 hours
D) 8.24 hours

Accepted Answer

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Question 5

Find the mean for the given sample data.
-Frank's Furniture employees earned the following amounts last week: $283.60 $451.20 $200.19 $424.90 $512.75
$294.88 $260.46 $358.72 $240.70
What was the mean amount earned by an employee last week? Round your answer to the nearest cent.
A) $432.49
B) $329.71
C) $378.43
D) $336.38

Accepted Answer

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Question 6

Find the mean for the given sample data.
-The amount of time (in hours) that Sam studied for an exam on each of the last five days is given below. Find his mean study time.
1)5 8.9 6.7 1.9 4.3
A) 5.45 hours
B) 23.30 hours
C) 4.96 hours
D) 4.66 hours

Accepted Answer

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Question 7

Find the mean for the given sample data.
-17, 14, 16, 17, 18
A) 17
B) 20.5
C) 15
D) 16.4

Accepted Answer

The mean is calculated by adding all the numbers together and dividing by the number of values. (17 + 14 + 16 + 17 + 18) / 5 = 82 / 5 = 16.4.

Question 8

Find the mean for the given sample data.
-The Cane brothers spent these amounts on groceries over the last eight weeks: $77.15 $84.61 $67.48 $75.38
$63.56 $85.98 $87.97 $86.93
What was the mean amount spent? Round your answer to the nearest cent.
A) $78.63
B) $113.81
C) $104.84
D) $89.87

Accepted Answer

To find the mean, add all the amounts together and then divide by the number of weeks. The total is $628.06, and there are 8 weeks. $628.06 / 8 = $78.5075, which rounds to $78.51, but the closest option given is $78.63.

Question 9

Find the mean for the given sample data.
-Jeremy's car got 304 miles (highway) on 8 gallons of gasoline. What was the average number of miles per gallon?
A) 39 mpg
B) 38 mpg
C) 40 mpg
D) 37 mpg

Accepted Answer

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Question 10

Find the mean for the given sample data.
-The normal monthly precipitation (in inches) for August is listed for 20 different U.S. cities. Find the mean of the data.

A) 3.09 in.
B) 2.80 in.
C) 2.94 in.
D) 3.27 in.

Accepted Answer

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Question 11

Find the mean for the given sample data.
-Last year, nine employees of an electronics company retired. Their ages at retirement are listed below. Find the mean retirement age.
53 62 61
51 65 58
60 51 53
A) 55.9 years
B) 57.1 years
C) 56.5 years
D) 58.0 years

Accepted Answer

To find the mean, add all the ages together and divide by the number of data points: (53 + 62 + 61 + 51 + 65 + 58 + 60 + 51 + 53) / 9 = 57.1 years.

Question 12

Find the median for the given sample data.
-The weights (in ounces) of 21 cookies are shown. Find the median weight. 0.83 1.23 0.80 1.62 0.87 0.88 1.35
1.23 1.53 0.94 0.83 1.00 1.37 0.76
0.47 1.00 0.88 1.37 1.72 0.87 0.56
A) 1.23 oz
B) 0.85 oz
C) 0.76 oz
D) 0.94 oz

Accepted Answer

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Question 13

Find the mean for the given sample data.
-The local Tupperware dealers earned these commissions last month:

What was the mean commission earned? Round your answer to the nearest cent.
A) $2703.92
B) $2157.14
C) $2403.48
D) $2163.14

Accepted Answer

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Question 14

Find the median for the given sample data.
-A new business had the following monthly net gains:

Find the median net gain.
A) $5968.00
B) $5065.50
C) $5981.00
D) $5628.33

Accepted Answer

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Question 15

Find the median for the given sample data.
-The number of vehicles passing through a bank drive-up line during each 15-minute period was recorded. The results are shown below. Find the median number of vehicles going through the line in a fifteen-minute period.
27 29 27 30
30 27 32 29
37 33 33 31
26 33 27 22
17 29 29 29
A) 29 vehicles
B) 30 vehicles
C) 33 vehicles
D) 28.85 vehicles

Accepted Answer

To find the median, first, arrange the data in ascending order: 17, 22, 26, 27, 27, 27, 27, 29, 29, 29, 29, 30, 30, 31, 32, 33, 33, 33, 37. The median is the middle number, which is 29 vehicles.

Question 16

Find the mean for the given sample data.
-The total amount spent on advertising last year by 10 companies was $394.9 million. What was the average amount spent per company last year on advertising?
A) $28.30 million
B) $3.85 million
C) $39.49 million
D) $394.9 million

Accepted Answer

The mean (average) amount spent per company is calculated by dividing the total amount spent by the number of companies. $394.9 million / 10 companies = $39.49 million per company.

Question 17

Find the mean for the given sample data.
-Six college students spent $150.79, $189.07, $294.93, $206.37, $297.05, and $292.43 respectively for books. Compute the mean amount spent. Round your answer to the nearest cent.
A) $274.13
B) $286.13
C) $238.44
D) $357.66

Accepted Answer

To find the mean amount spent, add all the amounts together and then divide by the number of students. The total amount spent is $150.79 + $189.07 + $294.93 + $206.37 + $297.05 + $292.43 = $1430.64. Dividing this total by the number of students (6) gives a mean of $1430.64 / 6 = $238.44.

Question 18

Find the median for the given sample data.
-In ten trips to Las Vegas, a person had the following net gains: 
Find the median net gain.
A) $4600.00
B) $4498.30
C) $4438
D) $4998.61

Accepted Answer

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Question 19

Find the median for the given sample data.
-The salaries of ten randomly selected doctors are shown below.

Find the median salary.
A) $187,500
B) $194,000
C) $233,000
D) $259,000

Accepted Answer

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Question 20

Find the median for the given sample data.
-The distances traveled (in miles) to 7 different swim meets are given below: 12, 27, 40, 49, 72, 73, 90
Find the median distance traveled.
A) 40 mi
B) 72 mi
C) 52 mi
D) 49 mi

Accepted Answer

The median is the middle value of a data set that has been arranged in order of magnitude. With 7 data points, the median is the 4th value, which is 49 miles.

Quiz 10: Statistics and Probability

Find the mean for the given sample data. -The students in Hugh Logan's math class took the Scholastic Aptitude Test. Their math scores are shown below. Find the mean score. 614 598 353 354 541 355 340 539 470 482

Find the median for the given sample data. -2, 3, 8, 21, 30, 30, 49 Find the median for the data.

Find the median for the given sample data. -A store manager kept track of the number of newspapers sold each week over a seven-week period. The results are shown below. 56, 18, 221, 189, 280, 244, 235 Find the median number of newspapers sold.

Find the mean for the given sample data. -Bill kept track of the number of hours he spent exercising each week. The results for four months are shown below. Find the mean number of hours Bill spent exercising per week. Round your answer to two decimal Places.

Find the mean for the given sample data. -Frank's Furniture employees earned the following amounts last week: $283.60 $451.20 $200.19 $424.90 $512.75 $294.88 $260.46 $358.72 $240.70 What was the mean amount earned by an employee last week? Round your answer to the nearest cent.

Find the mean for the given sample data. -The amount of time (in hours) that Sam studied for an exam on each of the last five days is given below. Find his mean study time. 1) 5 8.9 6.7 1.9 4.3

Find the mean for the given sample data. -17, 14, 16, 17, 18

Find the mean for the given sample data. -The Cane brothers spent these amounts on groceries over the last eight weeks: $77.15 $84.61 $67.48 $75.38 $63.56 $85.98 $87.97 $86.93 What was the mean amount spent? Round your answer to the nearest cent.

Find the mean for the given sample data. -Jeremy's car got 304 miles (highway) on 8 gallons of gasoline. What was the average number of miles per gallon?

Find the mean for the given sample data. -The normal monthly precipitation (in inches) for August is listed for 20 different U.S. cities. Find the mean of the data.

Find the mean for the given sample data. -Last year, nine employees of an electronics company retired. Their ages at retirement are listed below. Find the mean retirement age. 53 62 61 51 65 58 60 51 53

Find the median for the given sample data. -The weights (in ounces) of 21 cookies are shown. Find the median weight. 0.83 1.23 0.80 1.62 0.87 0.88 1.35 1.23 1.53 0.94 0.83 1.00 1.37 0.76 0.47 1.00 0.88 1.37 1.72 0.87 0.56

Find the mean for the given sample data. -The local Tupperware dealers earned these commissions last month: What was the mean commission earned? Round your answer to the nearest cent.

Find the median for the given sample data. -A new business had the following monthly net gains: Find the median net gain.

Find the mean for the given sample data. -The total amount spent on advertising last year by 10 companies was $394.9 million. What was the average amount spent per company last year on advertising?

Find the mean for the given sample data. -Six college students spent $150.79, $189.07, $294.93, $206.37, $297.05, and $292.43 respectively for books. Compute the mean amount spent. Round your answer to the nearest cent.

Find the median for the given sample data. -In ten trips to Las Vegas, a person had the following net gains: Find the median net gain.

Find the median for the given sample data. -The salaries of ten randomly selected doctors are shown below. Find the median salary.

Find the median for the given sample data. -The distances traveled (in miles) to 7 different swim meets are given below: 12, 27, 40, 49, 72, 73, 90 Find the median distance traveled.