The frequency table shows the weight,in kilograms,of 120 adults,rounded to the nearest kilogram. \[\begin{array} { c | c | c | c } \text { Weight } & \text { Count } & \text { Weight } & \text { Count } \\ \hline 60 & 1 & 68 & 12 \\ 61 & 6 & 69 & 6 \\ 62 & 7 & 70 & 3 \\ 63 & 5 & 71 & 12 \\ 64 & 8 & 72 & 10 \\ 65 & 7 & 73 & 2 \\ 66 & 7 & 74 & 4 \\ 67 & 25 & 75 & 5 \end{array}\]

A) 60,65,67,70,75 kg B) 60,65,66,70,75 kg C) 60,65,67,71,75 kg D) 60,66,67,70,75 kg E) 60,65,66,71,75 kg A) 60,65,67,70,75 kg B) 60,65,66,70,75 kg C) 60,65,67,71,75 kg D) 60,66,67,70,75 kg E) 60,65,66,71,75 kg

The weekly salaries (in dollars)of sixteen government workers are listed below. \[\begin{array} { l l l l } 690 & 594 & 813 & 636 \\ 728 & 585 & 486 & 634 \\ 534 & 679 & 685 & 451 \\ 558 & 787 & 503 & 826 \end{array}\]

A) 451,540,635,718.5,826 dollars B) 451,540,634,718.5,826 dollars C) 451,546,635,709,826 dollars D) 451,534,634,690,826 dollars A) 451,540,635,718.5,826 dollars B) 451,540,634,718.5,826 dollars C) 451,546,635,709,826 dollars D) 451,534,634,690,826 dollars

Office workers were asked how long it took them to travel to work one morning.Here is the stem-and-leaf display. \[\begin{array} { l } 2 \\ 3 \\ 4 \\ 5 \\ 6 \end{array}\] \[\begin{array} { | l } 0002344578 \\ 0257 \\ 12789 \\ 028 \\ 05 \end{array}\] Would you use the median or the mean to describe the centre of this distribution?

A) Mean,because the data are skewed to the right. B) Median,because the data are skewed to the left. C) Mean,because the data are skewed to the left. D) Mean,because the data are symmetric. E) Median,because the data are skewed to the right. A) Mean,because the data are skewed to the right. B) Median,because the data are skewed to the left. C) Mean,because the data are skewed to the left. D) Mean,because the data are symmetric. E) Median,because the data are skewed to the right.

The weekly salaries,in dollars,of 16 government workers are listed below.Find the lower quartile (Q1)by hand. \[\begin{array} { l l l l l } \$ 690 & \$ 589 & \$ 813 & \$ 656 \\ \$ 728 & \$ 556 & \$ 491 & \$ 614 \\ \$ 532 & \$ 662 & \$ 685 & \$ 462 \\ \$ 542 & \$ 787 & \$ 511 & \$ 826 \end{array}\]

A) $542.00 B) $537.00 C) $491.00 D) $534.50 E) $532.00 A) $542.00 B) $537.00 C) $491.00 D) $534.50 E) $532.00

Exam 3: Displaying and Summarizing Quantitative Data

The frequency table shows the weight,in kilograms,of 120 adults,rounded to the nearest kilogram. Weight Count Weight Count 60 1 68 12 61 6 69 6 62 7 70 3 63 5 71 12 64 8 72 10 65 7 73 2 66 7 74 4 67 25 75 5

(Multiple Choice)

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Question 101

The weekly salaries (in dollars)of sixteen government workers are listed below. 690 594 813 636 728 585 486 634 534 679 685 451 558 787 503 826

(Multiple Choice)

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Question 102

A university instructor created a website for her Chemistry course.The students in her class were encouraged to use the website as an additional resource for the course.At the end of the semester,the instructor asked each student how many times he or she visited the website and recorded the counts.Based on the histogram below,describe the distribution of website use.

(Multiple Choice)

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Question 103

Here are the number of baseball games that Dave attended over the last several seasons. 1 15 17 21 30 30 49

(Multiple Choice)

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Question 104

Office workers were asked how long it took them to travel to work one morning.Here is the stem-and-leaf display. 2 3 4 5 6 0002344578 0257 12789 028 05 Would you use the median or the mean to describe the centre of this distribution?

(Multiple Choice)

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Question 105

Ages of high school students.

(Multiple Choice)

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Question 106

Here is the boxplot and an ogive of the distribution of students marks on their statistics test. Write a few sentences describing this distribution.

(Multiple Choice)

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Question 107

The free throw percentages for participants in a basketball tournament were compiled.The percents ranged from 31% to 91% with a mean of 63% and a standard deviation of 6%.The quartiles and median percentages were 41%,79%,and 63%.Suppose one participant did not make any of his attempted free throws (0%).Which of the summary statistics might not change if that data value was added to the distribution?

(Multiple Choice)

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Question 108

Ages of patients who had their tonsils removed at a hospital over the course of a year.

(Multiple Choice)

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Question 109

Heights of adult women attending a concert.

(Multiple Choice)

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Question 110

The weekly salaries,in dollars,of 16 government workers are listed below.Find the upper quartile (Q3)by hand. $492 $791 $545 $840 $506 $734 $620 $815 $676 $874 $450 $561 $713 $473 $654 $527

(Multiple Choice)

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Question 111

Here are the summary statistics for mathematics scores for one high-school graduating class. Mean Median SD Min Max Q1 Q3 Male 17 60 63 18.6 30 100 52 78 Female 18 65 66 17.7 36 98 50 80 Choose the boxplot that represents the given data. I $Here are the summary statistics for mathematics scores for one high-school graduating class. \begin{array} { l | c | c | c | c | c | c | c | c } & \mathbf { n } & \text { Mean } & \text { Median } & \text { SD } & \text { Min } & \text { Max } & \text { Q1 } & \text { Q3 } \\ \hline \text { Male } & 17 & 60 & 63 & 18.6 & 30 & 100 & 52 & 78 \\ \text { Female } & 18 & 65 & 66 & 17.7 & 36 & 98 & 50 & 80 \end{array} Choose the boxplot that represents the given data. I II III IV V$ II $Here are the summary statistics for mathematics scores for one high-school graduating class. \begin{array} { l | c | c | c | c | c | c | c | c } & \mathbf { n } & \text { Mean } & \text { Median } & \text { SD } & \text { Min } & \text { Max } & \text { Q1 } & \text { Q3 } \\ \hline \text { Male } & 17 & 60 & 63 & 18.6 & 30 & 100 & 52 & 78 \\ \text { Female } & 18 & 65 & 66 & 17.7 & 36 & 98 & 50 & 80 \end{array} Choose the boxplot that represents the given data. I II III IV V$ III $Here are the summary statistics for mathematics scores for one high-school graduating class. \begin{array} { l | c | c | c | c | c | c | c | c } & \mathbf { n } & \text { Mean } & \text { Median } & \text { SD } & \text { Min } & \text { Max } & \text { Q1 } & \text { Q3 } \\ \hline \text { Male } & 17 & 60 & 63 & 18.6 & 30 & 100 & 52 & 78 \\ \text { Female } & 18 & 65 & 66 & 17.7 & 36 & 98 & 50 & 80 \end{array} Choose the boxplot that represents the given data. I II III IV V$ IV $Here are the summary statistics for mathematics scores for one high-school graduating class. \begin{array} { l | c | c | c | c | c | c | c | c } & \mathbf { n } & \text { Mean } & \text { Median } & \text { SD } & \text { Min } & \text { Max } & \text { Q1 } & \text { Q3 } \\ \hline \text { Male } & 17 & 60 & 63 & 18.6 & 30 & 100 & 52 & 78 \\ \text { Female } & 18 & 65 & 66 & 17.7 & 36 & 98 & 50 & 80 \end{array} Choose the boxplot that represents the given data. I II III IV V$ V $Here are the summary statistics for mathematics scores for one high-school graduating class. \begin{array} { l | c | c | c | c | c | c | c | c } & \mathbf { n } & \text { Mean } & \text { Median } & \text { SD } & \text { Min } & \text { Max } & \text { Q1 } & \text { Q3 } \\ \hline \text { Male } & 17 & 60 & 63 & 18.6 & 30 & 100 & 52 & 78 \\ \text { Female } & 18 & 65 & 66 & 17.7 & 36 & 98 & 50 & 80 \end{array} Choose the boxplot that represents the given data. I II III IV V$

(Multiple Choice)

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Question 112

A dotplot of the number of tornadoes each year in a certain county from 1948 to 2004 is given.Each dot represents a year in which there were that many tornadoes.

(Multiple Choice)

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Question 113

The test scores of 15 students are listed below.Find the lower quartile (Q1)by hand. 41 49 50 55 58 64 65 68 72 76 85 87 90 94 95

(Multiple Choice)

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Question 114

The histogram displays the body fat percentages of 65 students taking a college health course.In addition to describing the distribution,give a reason to account for the shape of this distribution.

(Multiple Choice)

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Question 115

The histograms display the body fat percentages of 42 female students and 48 male students taking a college health course.For which of the variables depicted in the histograms would you be most satisfied to summarize the centre with a mean? Explain.

(Multiple Choice)

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Question 116

Here are summary statistics of the four last digits of social security number of 500 customers,corresponding to the following histogram. Count 500 Mean 4919 StdDev 1556 Median 5009 IQR 2009 Q1 4018 Q3 6027 $Here are summary statistics of the four last digits of social security number of 500 customers,corresponding to the following histogram. \begin{array}{l} \begin{array} { l | l } \text { Count } & 500 \\ \hline \text { Mean } & 4919 \\ \hline \text { StdDev } & 1556 \\ \hline \text { Median } & 5009 \\ \hline \text { IQR } & 2009 \\ \hline \text { Q1 } & 4018 \\ \hline \text { Q3 } & 6027 \end{array}\\ \end{array} Is the mean or median a better summary of the centre of the distribution?$ Is the mean or median a "better" summary of the centre of the distribution?

(Multiple Choice)

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Question 117

Here are some summary statistics for all of the runners in a local 12 kilometre race: slowest $\text { time } = 121$ minutes $\text { mean } = 76$ minutes $\text { median } = 76$ minutes $\text { range } = 91$ minutes $\mathrm { IQR } = 57$ $\mathrm { Q } 1 = 30$ standard $\text { deviation } = 13$ minutes Between what two values are the middle 50% of times?

(Multiple Choice)

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Question 118

The weekly salaries,in dollars,of 16 government workers are listed below.Find the lower quartile (Q1)by hand. \ 690 \ 589 \ 813 \ 656 \ 728 \ 556 \ 491 \ 614 \ 532 \ 662 \ 685 \ 462 \ 542 \ 787 \ 511 \ 826

(Multiple Choice)

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Question 119

The following stem-and-leaf display shows the number of homeless cats and dogs that had to be euthanized each year in a large city for the period 1995-2014. Animal Totals 90 89 88 87 86 85 84 83 82 81 2 3 5557 157 2 3357 223556 Key: 87 $|~5$ = 87,500 cats and dogs euthanized

(Multiple Choice)

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Question 120

Showing 101 - 120 of 148

Exam 3: Displaying and Summarizing Quantitative Data

The frequency table shows the weight,in kilograms,of 120 adults,rounded to the nearest kilogram. Weight Count Weight Count 60 1 68 12 61 6 69 6 62 7 70 3 63 5 71 12 64 8 72 10 65 7 73 2 66 7 74 4 67 25 75 5

The weekly salaries (in dollars)of sixteen government workers are listed below. 690 594 813 636 728 585 486 634 534 679 685 451 558 787 503 826

Here are the number of baseball games that Dave attended over the last several seasons. 1 15 17 21 30 30 49

Office workers were asked how long it took them to travel to work one morning.Here is the stem-and-leaf display. 2 3 4 5 6 0002344578 0257 12789 028 05 Would you use the median or the mean to describe the centre of this distribution?

Ages of high school students.

Here is the boxplot and an ogive of the distribution of students marks on their statistics test. Write a few sentences describing this distribution.

Ages of patients who had their tonsils removed at a hospital over the course of a year.

Heights of adult women attending a concert.

The weekly salaries,in dollars,of 16 government workers are listed below.Find the upper quartile (Q3)by hand. $492 $791 $545 $840 $506 $734 $620 $815 $676 $874 $450 $561 $713 $473 $654 $527

Here are the summary statistics for mathematics scores for one high-school graduating class. Mean Median SD Min Max Q1 Q3 Male 17 60 63 18.6 30 100 52 78 Female 18 65 66 17.7 36 98 50 80 Choose the boxplot that represents the given data. I II III IV V

A dotplot of the number of tornadoes each year in a certain county from 1948 to 2004 is given.Each dot represents a year in which there were that many tornadoes.

The test scores of 15 students are listed below.Find the lower quartile (Q1)by hand. 41 49 50 55 58 64 65 68 72 76 85 87 90 94 95

The histogram displays the body fat percentages of 65 students taking a college health course.In addition to describing the distribution,give a reason to account for the shape of this distribution.

The histograms display the body fat percentages of 42 female students and 48 male students taking a college health course.For which of the variables depicted in the histograms would you be most satisfied to summarize the centre with a mean? Explain.

Here are summary statistics of the four last digits of social security number of 500 customers,corresponding to the following histogram. Count 500 Mean 4919 StdDev 1556 Median 5009 IQR 2009 Q1 4018 Q3 6027 Is the mean or median a "better" summary of the centre of the distribution?

The weekly salaries,in dollars,of 16 government workers are listed below.Find the lower quartile (Q1)by hand. \ 690 \ 589 \ 813 \ 656 \ 728 \ 556 \ 491 \ 614 \ 532 \ 662 \ 685 \ 462 \ 542 \ 787 \ 511 \ 826

The following stem-and-leaf display shows the number of homeless cats and dogs that had to be euthanized each year in a large city for the period 1995-2014. Animal Totals 90 89 88 87 86 85 84 83 82 81 2 3 5557 157 2 3357 223556 Key: 87 ∣ 5|~5∣ 5 = 87,500 cats and dogs euthanized

Stats Starts Here

Displaying and Describing Categorical Data

Understanding and Comparing Distributions

The Standard Deviation As a Ruler and the Normal Model

Scatterplots, association, and Correlation

Linear Regression

Regression Wisdom

Understanding Randomness

Sample Surveys

Experiments and Observational Studies

From Randomness to Probability

Probability Rules

Random Variables

Sampling Distribution Models

Confidence Intervals for Proportions

Testing Hypotheses About Proportions

More About Tests

Comparing Two Proportions

Inferences About Means

Comparing Means

Paired Samples and Blocks

Comparing Counts

Inferences for Regression

Analysis of Variance

Multifactor Analysis of Variance

Multiple Regression

Multiple Regression Wisdom

Rank-Based Nonparametric Tests

The Bootstrap

Filters

The following stem-and-leaf display shows the number of homeless cats and dogs that had to be euthanized each year in a large city for the period 1995-2014. Animal Totals 90 89 88 87 86 85 84 83 82 81 2 3 5557 157 2 3357 223556 Key: 87 $|~5$ = 87,500 cats and dogs euthanized