Use the high closing values of Naristar Inc.stock from the years 2003-2014 to construct a timeplot. \[\begin{array} { c | c | c | c } \text { Year } & \text { High } & \text { Year } & \text { High } \\ \hline 2003 & 42 & 2009 & 47 \\ 2004 & 40 & 2010 & 60 \\ 2005 & 31 & 2011 & 61 \\ 2006 & 42 & 2012 & 57 \\ 2007 & 44 & 2013 & 54 \\ 2008 & 47 & 2014 & 30 \end{array}\]

The answer of Use the high closing values of Naristar...

Use the high closing values of Naristar Inc.stock from the years 2003-2014 to construct a timeplot. \[\begin{array} { c | c | c | c } \text { Year } & \text { High } & \text { Year } & \text { High } \\ \hline 2003 & 48 & 2009 & 62 \\ 2004 & 53 & 2010 & 60 \\ 2005 & 47 & 2011 & 68 \\ 2006 & 55 & 2012 & 42 \\ 2007 & 58 & 2013 & 51 \\ 2008 & 61 & 2014 & 78 \end{array}\]

The answer of Use the high closing values of Naristar...

The reaction time of 20 drivers at a stop light was measured,in seconds,as the time between the traffic light turning green and the time it took them to press the gas pedal. $\begin{array} { l l l l l } 0.4 & 1.0 & 1.5 & 1.6 & 2.0 \end{array}$ $\begin{array} { l l l l l } 2.2 & 2.4 & 2.7 & 3.4 & 3.4 \end{array}$ $\begin{array} { l l l l l } 3.5 & 3.6 & 3.6 & 3.7 & 3.7 \end{array}$ $\begin{array} { l l l l l } 3.9 & 4.1 & 4.2 & 4.2 & 7.0 \end{array}$

A) 0.4,7.0 B) 0.4 C) 4.2,7.0 D) 7.0 E) None A) 0.4,7.0 B) 0.4 C) 4.2,7.0 D) 7.0 E) None

The back-to-back stem-and-leaf display compares the percent growth in sales for a retail chain's stores located in two regions of Canada.The lower stem contains leaves with the digits 0-4 and the upper stem contains leaves with digits 5-9. $\begin{array} { r } \text{Region 1 Stores}\\ \\\\\\ 211000 \\ 998876655555 \\ 444433 \end{array}$ $\begin{array} { |l| } 6 \\ 6 \\ 5 \\ 5 \\ 4 \\ 4 \\ 3 \\ 3 \\ 2 \\ 2 \\ 1 \\ 1 \\ 0 \\ 0 \end{array}$ $\begin{array} { l } \text{Region 2 Stores}\\ 5\\\\ 8 \\\\\\\\ 556 \\ 34 \\ 67 \\ 233 \\ 55567 \\ 024444 \\ 56 \\ 444 \end{array}$ Key: 3 $|~5$ = 35% sales growth

A) The distribution of sales growth in Region 1 stores is unimodal,symmetric and tightly clustered around 35% growth.The distribution of sales growth in Region 2 stores is much more spread out,with most stores having sales growth between 5% and 35%.A typical Region 2 store had about 15% growth.There were two outliers,one store with 58% growth and another with 65% growth.Generally,the sales growth rates in the Region 2 stores were higher and more variable than the rates in the Region 1 stores. B) The distribution of sales growth in the Region 1 stores is unimodal,symmetric and tightly clustered around 35% growth.The distribution of sales growth in Region 2 stores is much more spread out,with most stores having sales growth between 5% and 35%.A typical Region 2 store had about 15% growth.There were two outliers,one store with 58% growth and another with 65% growth.Generally,the sales growth rates in the Region 1 stores were higher and less variable than the rates in the Region 2 stores. C) The distribution of sales growth in Region 1 stores is unimodal,symmetric and tightly clustered around 35% growth.The distribution of sales growth in Region 2 stores is much more spread out,with most stores having sales growth between 5% and 35%.A typical Region 2 store had about 15% growth.There were two outliers,one store with 58% growth and another with 65% growth.Generally,the sales growth rates in the Region 1 stores were higher and more variable than the rates in the Region 2 stores. D) The distribution of sales growth in Region 1 stores is unimodal,symmetric and tightly clustered around 45% growth.The distribution of sales growth in Region 2 stores is much more spread out,with most stores having sales growth between 5% and 35%.A typical Region 2 store had about 25% growth.There were two outliers,one store with 58% growth and another with 65% growth.Generally,the sales growth rates in the Region 2 stores were higher and more variable than the rates in the Region 1 stores. E) The distribution of sales growth in Region 1 stores is unimodal,symmetric and tightly clustered around 45% growth.The distribution of sales growth in Region 2 stores is much more spread out,with most stores having sales growth between 5% and 35%.A typical Region 2 store had about 25% growth.There were two outliers,one store with 58% growth and another with 65% growth.Generally,the sales growth rates in the Region 1 stores were higher and less variable than the rates in the Region 2 stores. A) The distribution of sales growth in Region 1 stores is unimodal,symmetric and tightly clustered around 35% growth.The distribution of sales growth in Region 2 stores is much more spread out,with most stores having sales growth between 5% and 35%.A typical Region 2 store had about 15% growth.There were two outliers,one store with 58% growth and another with 65% growth.Generally,the sales growth rates in the Region 2 stores were higher and more variable than the rates in the Region 1 stores. B) The distribution of sales growth in the Region 1 stores is unimodal,symmetric and tightly clustered around 35% growth.The distribution of sales growth in Region 2 stores is much more spread out,with most stores having sales growth between 5% and 35%.A typical Region 2 store had about 15% growth.There were two outliers,one store with 58% growth and another with 65% growth.Generally,the sales growth rates in the Region 1 stores were higher and less variable than the rates in the Region 2 stores. C) The distribution of sales growth in Region 1 stores is unimodal,symmetric and tightly clustered around 35% growth.The distribution of sales growth in Region 2 stores is much more spread out,with most stores having sales growth between 5% and 35%.A typical Region 2 store had about 15% growth.There were two outliers,one store with 58% growth and another with 65% growth.Generally,the sales growth rates in the Region 1 stores were higher and more variable than the rates in the Region 2 stores. D) The distribution of sales growth in Region 1 stores is unimodal,symmetric and tightly clustered around 45% growth.The distribution of sales growth in Region 2 stores is much more spread out,with most stores having sales growth between 5% and 35%.A typical Region 2 store had about 25% growth.There were two outliers,one store with 58% growth and another with 65% growth.Generally,the sales growth rates in the Region 2 stores were higher and more variable than the rates in the Region 1 stores. E) The distribution of sales growth in Region 1 stores is unimodal,symmetric and tightly clustered around 45% growth.The distribution of sales growth in Region 2 stores is much more spread out,with most stores having sales growth between 5% and 35%.A typical Region 2 store had about 25% growth.There were two outliers,one store with 58% growth and another with 65% growth.Generally,the sales growth rates in the Region 1 stores were higher and less variable than the rates in the Region 2 stores.

Exam 4: Understanding and Comparing Distributions

Use the Olympic gold medal performances in the men's high jump from the years 1960-2012 to construct a timeplot. Year High Jump (in.) 1960 85.25 1964 85.75 1968 88.25 1972 87.75 1976 88.50 1980 92.50 1984 92.50 1988 93.75 1992 92.25 1996 94.00 2000 92.50 2004 93.00 2008 93.00 2012 93.75

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Question 1

Correct Answer:

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Year

Here are boxplots of the points scored during the first 10 games of the basketball season for both Caroline and Alexandra.The coach can take only one player to the state championship.Which one should she take knowing that she would like a safe player?

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Question 2

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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 1985-2004.Use both the stemplot and timeplot to describe the distribution. Euthanized Animal Totals 90 89 88 87 86 85 84 83 82 81 0 3 4449 057 6 1157 001338 \ Key: $87 \mid 5 = 87,500$ cats and dogs euthanized $The following stem-and-leaf display shows the number of homeless cats and dogs that had to be euthanized each year in a large city for the period 1985-2004.Use both the stemplot and timeplot to describe the distribution. Euthanized Animal Totals 90 89 88 87 86 85 84 83 82 81 \begin{array} { |l } 0 \\ 3 \\ 4449 \\ 057\\\\ 6\\\\ 1157\\ 001338\\ \end{array} \ Key: 87 \mid 5 = 87,500 cats and dogs euthanized$

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Question 3

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Which class do you think performed better on the test?

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Question 4

Use the high closing values of Naristar Inc.stock from the years 2003-2014 to construct a timeplot. Year High Year High 2003 42 2009 47 2004 40 2010 60 2005 31 2011 61 2006 42 2012 57 2007 44 2013 54 2008 47 2014 30

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Question 5

Use the high closing values of Naristar Inc.stock from the years 2003-2014 to construct a timeplot. Year High Year High 2003 48 2009 62 2004 53 2010 60 2005 47 2011 68 2006 55 2012 42 2007 58 2013 51 2008 61 2014 78

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Question 6

A business owner recorded her annual profits for the first 12 years since opening her business in 1993.The stem-and-leaf display below shows the annual profits in thousands of dollars.Use both the stemplot and timeplot to describe the distribution. Annual Profit Totals 8 7 6 5 4 3 2 1 0133 9 023 8 24 7 Key: $7 \mid 9 = \$ 79,000 \text { profit }$ $A business owner recorded her annual profits for the first 12 years since opening her business in 1993.The stem-and-leaf display below shows the annual profits in thousands of dollars.Use both the stemplot and timeplot to describe the distribution. Annual Profit Totals 8 7 6 5 4 3 2 1 \begin{array} { l } 0133 \\ 9 \\\\ 023 \\ 8 \\\\ 24 \\ 7 \end{array} Key: 7 \mid 9 = \$ 79,000 \text { profit }$

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Question 7

The histograms display the body fat percentages of 42 female students and 48 male students taking a college health course. Compare the distributions (shape,centre,spread,unusual features).

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Question 8

The reaction time of 20 drivers at a stop light was measured,in seconds,as the time between the traffic light turning green and the time it took them to press the gas pedal. 0.4 1.0 1.5 1.6 2.0 2.2 2.4 2.7 3.4 3.4 3.5 3.6 3.6 3.7 3.7 3.9 4.1 4.2 4.2 7.0

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Question 9

Here are the heights,in centimetres,of 32 Grade 3 students. 100 100 105 105 106 106 107 107 108 110 110 112 112 112 114 114 114 115 116 117 118 118 118 118 118 119 120 121 122 125 128 142

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Question 10

Which class had the smallest standard deviation?

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Question 11

Describe what these boxplots tell you about the relationship between the provinces and salary,based on the same occupation.

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Question 12

The times,in minutes,it took for 21 students to finish writing a statistics test are given below. 32.4 30.5 34.6 64.9 22.1 31.8 16.6 27.7 36.2 60.6 24.3 47.2 45.6 9.2 27.1 18.9 14.2 31.4 24.2 12.5 35.4

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Question 13

Here are 3 boxplots of weekly gas prices at a service station in the U.S.A.(price in $ per gallon).Compare the distribution of prices over the three years.

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Question 14

The boxplots display case prices (in dollars)of white wines produced by three vineyards in south-western Ontario.Which vineyard produces the cheapest wine?

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Question 15

The ages of the 21 members of a track and field team are listed below. 15 18 18 19 22 23 24 24 24 25 25 26 26 27 28 28 30 32 33 40 42

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Question 16

Which class had the largest standard deviation?

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Question 17

The boxplots display case prices (in dollars)of white wines produced by three vineyards in south-western Ontario.In which vineyard are the wines generally more expensive?

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Question 18

The back-to-back stem-and-leaf display compares the percent growth in sales for a retail chain's stores located in two regions of Canada.The lower stem contains leaves with the digits 0-4 and the upper stem contains leaves with digits 5-9. Region 1 Stores 211000 998876655555 444433 6 6 5 5 4 4 3 3 2 2 1 1 0 0 Region 2 Stores 5 8 556 34 67 233 55567 024444 56 444 Key: 3 $|~5$ = 35% sales growth

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Question 19

The back-to-back stem-and-leaf display compares the annual precipitation,in millimetres,of two towns over a period of 14 years.The lower stem contains leaves with the digits 0-4 and the upper stem contains leaves with digits 5-9. Town1 3 \ 1 55 4443 0 9887 4 24 24 23 23 22 22 21 21 20 20 19 19 18 18 Town2 \ 5 24 5667 4 57789 2 Key: 20 $\mid 7$ = 20.7 millimetres

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Question 20

Showing 1 - 20 of 46

Exam 4: Understanding and Comparing Distributions

Use the Olympic gold medal performances in the men's high jump from the years 1960-2012 to construct a timeplot. Year High Jump (in.) 1960 85.25 1964 85.75 1968 88.25 1972 87.75 1976 88.50 1980 92.50 1984 92.50 1988 93.75 1992 92.25 1996 94.00 2000 92.50 2004 93.00 2008 93.00 2012 93.75

Here are boxplots of the points scored during the first 10 games of the basketball season for both Caroline and Alexandra.The coach can take only one player to the state championship.Which one should she take knowing that she would like a safe player?

Which class do you think performed better on the test?

Use the high closing values of Naristar Inc.stock from the years 2003-2014 to construct a timeplot. Year High Year High 2003 42 2009 47 2004 40 2010 60 2005 31 2011 61 2006 42 2012 57 2007 44 2013 54 2008 47 2014 30

Use the high closing values of Naristar Inc.stock from the years 2003-2014 to construct a timeplot. Year High Year High 2003 48 2009 62 2004 53 2010 60 2005 47 2011 68 2006 55 2012 42 2007 58 2013 51 2008 61 2014 78

The histograms display the body fat percentages of 42 female students and 48 male students taking a college health course. Compare the distributions (shape,centre,spread,unusual features).

The reaction time of 20 drivers at a stop light was measured,in seconds,as the time between the traffic light turning green and the time it took them to press the gas pedal. 0.4 1.0 1.5 1.6 2.0 2.2 2.4 2.7 3.4 3.4 3.5 3.6 3.6 3.7 3.7 3.9 4.1 4.2 4.2 7.0

Here are the heights,in centimetres,of 32 Grade 3 students. 100 100 105 105 106 106 107 107 108 110 110 112 112 112 114 114 114 115 116 117 118 118 118 118 118 119 120 121 122 125 128 142

Which class had the smallest standard deviation?

Describe what these boxplots tell you about the relationship between the provinces and salary,based on the same occupation.

The times,in minutes,it took for 21 students to finish writing a statistics test are given below. 32.4 30.5 34.6 64.9 22.1 31.8 16.6 27.7 36.2 60.6 24.3 47.2 45.6 9.2 27.1 18.9 14.2 31.4 24.2 12.5 35.4

Here are 3 boxplots of weekly gas prices at a service station in the U.S.A.(price in $ per gallon).Compare the distribution of prices over the three years.

The boxplots display case prices (in dollars)of white wines produced by three vineyards in south-western Ontario.Which vineyard produces the cheapest wine?

The ages of the 21 members of a track and field team are listed below. 15 18 18 19 22 23 24 24 24 25 25 26 26 27 28 28 30 32 33 40 42

Which class had the largest standard deviation?

The boxplots display case prices (in dollars)of white wines produced by three vineyards in south-western Ontario.In which vineyard are the wines generally more expensive?

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