Students in a statistics course were asked to \[\begin{array} { | l | l | } \hline \text { Superpower } & \text { Num of Students } \\ \hline \text { Fly } & 19 \\ \hline \text { Freeze Time } & 11 \\ \hline \text { Invisibility } & 7 \\ \hline \text { Super strength } & 4 \\ \hline \text { Telepathy } & 12 \\ \hline \end{array}\] Superpower.Results are listed to the right. A.Create a visual display for these data. B.Describe the distribution of the students' choices.

a. @#IMG-DLM& b. The ability to fly is

The following table shows total assets ($ billion) for a small sample of U.S.banks. \[\begin{array} { | l | l | } \hline{ \text { BANK } } & \text { ASSETS (\$ billion) } \\ \hline \text { Bank of New York } & 88 \\ \hline \text { Regions Financial } & 80 \\ \hline \text { Fifth Third Bank } & 58 \\ \hline \text { State Street Bank and Trust } & 92 \\ \hline \text { Branch Banking and Trust Company } & 81 \\ \hline \text { Chase Bank } & 70 \\ \hline \text { Key Bank } & 89 \\ \hline \text { PNC Bank } & 84 \\ \hline \end{array}\] The standard deviation for these data is

A) $12.78 billion. B) $ 11.27 billion. C) $ 127.01 billion. D) $ 21.67 billion. E) $ 34 billion. A) $12.78 billion. B) $ 11.27 billion. C) $ 127.01 billion. D) $ 21.67 billion. E) $ 34 billion.

The following table shows data for total assets ($ billion) for a small sample of U.S.banks (late 2013). \[\begin{array} { | l | c | } \hline { \text { BANK } } & \text { ASSETS (\$ billion) } \\ \hline \text { State Street Bank and Trust } & 160.5 \\ \hline \text { Discover Bank } & 63.9 \\ \hline \text { BancWest } & 72.8 \\ \hline \text { Citizens Bank } & 130.0 \\ \hline \text { Northern Trust } & 83.8 \\ \hline \text { Huntington Bank } & 53.8 \\ \hline \text { Key Bank } & 91.8 \\ \hline \text { People's United } & 27.9 \\ \hline \end{array}\] The mean for the total assets data ($ billion) is

A) $78.3. B) $56.3. C) $85.6. D) $120.5. E) $42.4. A) $78.3. B) $56.3. C) $85.6. D) $120.5. E) $42.4.

The following table shows total assets ($ billion) for a small sample of U.S.banks. \[\begin{array} { | l | l | } \hline { \text { BANK } } & \text { ASSETS (\$ billion) } \\ \hline \text { Bank of New York } & 88 \\ \hline \text { Regions Financial } & 80 \\ \hline \text { Fifth Third Bank } & 58 \\ \hline \text { State Street Bank and Trust } & 92 \\ \hline \text { Branch Banking and Trust Company } & 81 \\ \hline \text { Chase Bank } & 70 \\ \hline \text { Key Bank } & 89 \\ \hline \text { PNC Bank } & 84 \\ \hline \end{array}\] The mean for these data is

A) $ 80.25 billion. B) $ 100.35 billion. C) $ 75.68 billion. D) $ 84 billion. E) $ 89 billion. A) $ 80.25 billion. B) $ 100.35 billion. C) $ 75.68 billion. D) $ 84 billion. E) $ 89 billion.

Consider the five number summary of hourly wages ($) for a sample of sales managers. \[\begin{array} { | c | c | c | c | c | } \hline \text { Min } & \text { Q1 } & \text { Median } & \text { Q3 } & \text { Max } \\ \hline 20.94 & 37.64 & 44.77 & 49.34 & 67.11 \\ \hline \end{array}\] The IQR for these data is

A) $11.70 B) $46.17 C) $67.11 D) $20.94 E) $44.77 A) $11.70 B) $46.17 C) $67.11 D) $20.94 E) $44.77

Here is the five number summary for salaries of U.S.marketing managers. The IQR is \[\begin{array} { | c | c | c | c | c | } \hline \text { Min } & \text { Q1 } & \text { Median } & \text { Q3 } & \text { Max } \\ \hline 46360 & 69693 & 77020 & 91750 & 129420 \\ \hline \end{array}\]

A) $83,060. B) $22.057. C) $69,693. D) $77.020. A) $83,060. B) $22.057. C) $69,693. D) $77.020.

Consider the five number summary of hourly wages ($) for a sample of advertising / Promotion managers. \[\begin{array} { | c | c | c | c | c | } \hline \text { Min } & \text { Q1 } & \text { Median } & \text { Q3 } & \text { Max } \\ \hline 19.64 & 29.36 & 34.18 & 40.86 & 57.26 \\ \hline \end{array}\] Suppose there had been an error and that the lowest hourly wage was $15.50 instead of $19)64.This would result in

A) an increase in the median. B) an increase in the standard deviation. C) a decrease in the range. D) a decrease in the IQR. E) an increase in the mean. A) an increase in the median. B) an increase in the standard deviation. C) a decrease in the range. D) a decrease in the IQR. E) an increase in the mean.

A brake and muffler shop reported the repair bills, in \[\begin{array} { | l | l | l | l | l | } \hline 88 & 283 & 312 & 290 & 172 \\ \hline 154 & 400 & 381 & 346 & 181 \\ \hline 203 & 118 & 143 & 252 & 227 \\ \hline 56 & 192 & 292 & 213 & 422 \\ \hline \end{array}\] a.Sketch a histogram for these datA. b.Find the mean and standard deviation of the repair costs. c. Is it appropriate to use the mean and standard deviation to summarize these data? Explain. d. Describe the distribution of repair costs.

a. @#IMG-DLM& b. @#LAT-DLM& c.Yes, the data are roughly un

A automobile marketing firm conducts a study to see what types of cars people owned before Buying an American car.The results are shown below. \[\begin{array} { | c | c | } \hline \text { Previous Ownership } & \text { Frequency } \\ \hline \text { American } & 760 \\ \hline \text { Japanese } & 375 \\ \hline \text { Korean } & 72 \\ \hline \text { German } & 37 \\ \hline \text { Other } & 24 \\ \hline \text { Total } & \mathbf { 1 2 6 8 } \\ \hline \end{array}\] The relative frequency of those who owned Japanese cars previously who now bought American cars is

A) 59.9 % B) 29.6% C) 5.7% D) 14.9% E) 2.9% A) 59.9 % B) 29.6% C) 5.7% D) 14.9% E) 2.9%

Consider the five number summary of hourly wages ($) for a sample of sales managers. \[\begin{array} { | c | c | c | c | c | } \hline \text { Min } & \mathrm { Q } 1 & \text { Median } & \mathrm { Q } 3 & \text { Max } \\ \hline 20.94 & 37.64 & 44.77 & 49.34 & 67.11 \\ \hline \end{array}\] The range for these data is

A) $11.70 B) $46.17 C) $67.11 D) $20.94 E) $44.77 A) $11.70 B) $46.17 C) $67.11 D) $20.94 E) $44.77

Exam 2: Displaying and Describing Data

$\text { Below is a histogram of salaries (in \$) for a sample of U.S. marketing managers. }$ $\text { Below is a histogram of salaries (in \$) for a sample of U.S. marketing managers. } The most appropriate measure of central tendency for these data is the$ The most appropriate measure of central tendency for these data is the

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Question 1

Correct Answer:

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A

Suppose that the student taking 22 credit hours in the data set in the previous question was actually taking 28 credit hours instead of 22 (so we would replace the 22 in the data set with 28). Indicate whether changing the number of credit hours for that student would make each of the following summary statistics increase, decrease, or stay about the same: a. mean _ b. median c. range d. IQR e. standard deviation_

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Question 2

Correct Answer:

Verified

a. mean
increase

b. median
stay about the same

c. range
increase

d. IQR
stay about the same

e. standard deviation
increase

Below is a histogram of salaries (in $) for a sample of U.S.marketing managers. The shape of this distribution is

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Question 3

Correct Answer:

Verified

C

All students in a physical education class completed a basketball free-throw shooting event and the highest number of shots made was 32.The next day a student who had just transferred into the school completed the event, making 35 shots.Indicate whether adding the new student's score to the rest of the data made each of these summary statistics increase, decrease, or stay about the same: a. mean b. median c. range d. IQR e. standard deviation______

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Question 4

Students in a statistics course were asked to Superpower Num of Students Fly 19 Freeze Time 11 Invisibility 7 Super strength 4 Telepathy 12 Superpower.Results are listed to the right. A.Create a visual display for these data. B.Describe the distribution of the students' choices.

(Essay)

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Question 5

The following table shows total assets ($ billion) for a small sample of U.S.banks. BANK ASSETS (\ billion) Bank of New York 88 Regions Financial 80 Fifth Third Bank 58 State Street Bank and Trust 92 Branch Banking and Trust Company 81 Chase Bank 70 Key Bank 89 PNC Bank 84 The standard deviation for these data is

(Multiple Choice)

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Question 6

The following table shows data for total assets ($ billion) for a small sample of U.S.banks (late 2013). BANK ASSETS (\ billion) State Street Bank and Trust 160.5 Discover Bank 63.9 BancWest 72.8 Citizens Bank 130.0 Northern Trust 83.8 Huntington Bank 53.8 Key Bank 91.8 People's United 27.9 The mean for the total assets data ($ billion) is

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Question 7

Describe why the area principle is important in making a bar graph.It might be fun to ask an artist to liven up a bar graph by turning the bars into images.But include in your explanation why this might be risky.

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Question 8

A restaurant uses comment cards to get feedback from its customers about newly added items To the menu.It recently introduced homemade organic veggie burgers.Customers who tried The new burger were asked if they would order it again.The data are summarized in the table Below.What percentage of customers would most likely or definitely order the veggie Burger again? Response Frequency Definitely would. 10 Most likely would. 40 Maybe 12 Definitely would not. 3

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Question 9

The following table shows total assets ($ billion) for a small sample of U.S.banks. BANK ASSETS (\ billion) Bank of New York 88 Regions Financial 80 Fifth Third Bank 58 State Street Bank and Trust 92 Branch Banking and Trust Company 81 Chase Bank 70 Key Bank 89 PNC Bank 84 The mean for these data is

(Multiple Choice)

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Question 10

Consider the five number summary of hourly wages ($) for a sample of sales managers. Min Q1 Median Q3 Max 20.94 37.64 44.77 49.34 67.11 The IQR for these data is

(Multiple Choice)

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Question 11

The students in a biology class kept a record of the height 49 67 38 55 62 54 36 41 56 43 48 75 44 60 48 52 48 53 59 32 a.Sketch a histogram for these datA. b.Find the mean and standard deviation of the plant heights. c. Is it appropriate to use the mean and standard deviation to summarize these data? Explain. d. Describe the distribution of plant heights.

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Question 12

A survey conducted in a college intro stats class 10 10 12 14 15 15 15 15 17 17 19 20 20 20 20 22 asked students about the number of credit hours they were taking that quarter.The number of credit hours for a random sample of 16 students is given in the table. a.Sketch a histogram of these data b.Find the mean and standard deviation for the number of credit hours. c. Find the median and IQR for the number d. Is it more appropriate to use the mean of credit hours. and standard deviation or the median and IQR to summarize theses data?

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Question 13

Consider the five number summary of hourly wages ($) for a sample of sales managers. Suppose the mean hourly wage is $38.50.What can we say about the shape of the Distribution? Min Q1 Median Q3 Max 20.94 37.64 44.77 49.34 67.11

(Multiple Choice)

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Question 14

A clothing store uses comment cards to get feedback from its customers about newly added Items.It recently introduced plus size fashion wear.Customers who purchased the items Were asked to fill out an online comment survey giving 10% off the next purchasE.The data Are summarized in the table below.What percentage of customers were at least satisfied with The item(s) purchased (Satisfied or Very satisfied)? Response Frequency Very satisfied. 15 Satisfied. 30 Less than fully satisfied. 12 Not satisfied. 4

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Question 15

Here is the five number summary for salaries of U.S.marketing managers. The IQR is Min Q1 Median Q3 Max 46360 69693 77020 91750 129420

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Question 16

Consider the five number summary of hourly wages ($) for a sample of advertising / Promotion managers. Min Q1 Median Q3 Max 19.64 29.36 34.18 40.86 57.26 Suppose there had been an error and that the lowest hourly wage was $15.50 instead of $19)64.This would result in

(Multiple Choice)

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Question 17

A brake and muffler shop reported the repair bills, in 88 283 312 290 172 154 400 381 346 181 203 118 143 252 227 56 192 292 213 422 a.Sketch a histogram for these datA. b.Find the mean and standard deviation of the repair costs. c. Is it appropriate to use the mean and standard deviation to summarize these data? Explain. d. Describe the distribution of repair costs.

(Essay)

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Question 18

A automobile marketing firm conducts a study to see what types of cars people owned before Buying an American car.The results are shown below. Previous Ownership Frequency American 760 Japanese 375 Korean 72 German 37 Other 24 Total The relative frequency of those who owned Japanese cars previously who now bought American cars is

(Multiple Choice)

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Question 19

Consider the five number summary of hourly wages ($) for a sample of sales managers. Min 1 Median 3 Max 20.94 37.64 44.77 49.34 67.11 The range for these data is

(Multiple Choice)

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Question 20

Below is a histogram of salaries (in $) for a sample of U.S.marketing managers. The shape of this distribution is

Students in a statistics course were asked to Superpower Num of Students Fly 19 Freeze Time 11 Invisibility 7 Super strength 4 Telepathy 12 Superpower.Results are listed to the right. A.Create a visual display for these data. B.Describe the distribution of the students' choices.

Describe why the area principle is important in making a bar graph.It might be fun to ask an artist to liven up a bar graph by turning the bars into images.But include in your explanation why this might be risky.

The following table shows total assets ($ billion) for a small sample of U.S.banks. BANK ASSETS (\ billion) Bank of New York 88 Regions Financial 80 Fifth Third Bank 58 State Street Bank and Trust 92 Branch Banking and Trust Company 81 Chase Bank 70 Key Bank 89 PNC Bank 84 The mean for these data is

Consider the five number summary of hourly wages ($) for a sample of sales managers. Min Q1 Median Q3 Max 20.94 37.64 44.77 49.34 67.11 The IQR for these data is

Consider the five number summary of hourly wages ($) for a sample of sales managers. Suppose the mean hourly wage is $38.50.What can we say about the shape of the Distribution? Min Q1 Median Q3 Max 20.94 37.64 44.77 49.34 67.11

Here is the five number summary for salaries of U.S.marketing managers. The IQR is Min Q1 Median Q3 Max 46360 69693 77020 91750 129420

Consider the five number summary of hourly wages ($) for a sample of advertising / Promotion managers. Min Q1 Median Q3 Max 19.64 29.36 34.18 40.86 57.26 Suppose there had been an error and that the lowest hourly wage was $15.50 instead of $19)64.This would result in

Consider the five number summary of hourly wages ($) for a sample of sales managers. Min 1 Median 3 Max 20.94 37.64 44.77 49.34 67.11 The range for these data is

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