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Q. 2.24

Page 100

The following data set shows the heights in inches for the boys in a class of 40students.

66;66;67;67;68;68;68;68;68;69;69;69;70;71;72;72;72;73;73;74

The following data set shows the heights in inches for the girls in a class of 40students.

61;61;62;62;63;63;63;65;65;65;66;66;66;67;68;68;68;69;69;69

Construct a box plot using a graphing calculator for each data set, and state which box plot has the wider spread for the middle 50%of the data.

Q. 2.26

Page 102

The following data show the number of months patients typically wait on a transplant list before getting surgery.

The data are ordered from smallest to largest. Calculate the mean and median.

3;4;5;7;7;7;7;8;8;9;9;10;10;10;10;10;11;12;12;13;14;14;15;15;17;17;18;19;19;19;21;21;22;22;23;24;24;24;24

Q. 2.28

Page 103

The number of books checked out from the library from 25students are as follows:

0;0;0;1;2;3;3;4;4;5;5;7;7;7;7;8;8;8;9;10;10;11;11;12;12

Find the mode.

Q. 2.29

Page 103

Five credit scores are 680,680,700,720,720.The data set is bimodal because the scores 680and 720each occur twice. Consider the annual earnings of workers at a factory. The mode is \(25,000and occurs 150times out of 301.The median is \)50,000and the mean is $47,500.What would be the best measure of the 鈥渃enter鈥?

Q.23

Page 132

Listed are 29ages for Academy Award winning best actors in order from smallest to largest. 18;21;22;25;26;27;29;30;31;33;36;37;41;42;47;52;55;57;58;62;64;67;69;71;72;73;74;76;77a. Find the 40th percentile.

b. Find the 78th percentile.

Q. 2.3

Page 72

The table shows the number of wins and losses the Atlanta Hawks have had in 42seasons. Create a side-by-side stem-and-leaf plot of these wins and losses.

Q. 2.31

Page 109

Discuss the mean, median, and mode for each of the following problems. Is there a pattern between the shape and measure of the center?

Q. 2.32

Page 113

On a baseball team, the ages of each of the players are as follows:

21;21;22;23;24;24;25;25;28;29;29;31;32;33;33;34;35;36;36;36;36;38;38;38;40

Use your calculator or computer to find the mean and standard deviation. Then find the value that is two standard deviations above the mean.

Q.2.33

Page 116

The following data show the different types of pet food stores in the area carry. 6;6;6;6;7;7;7;7;7;8;9;9;9;9;10;10;10;10;10;11;11;11;11;12;12;12;12;12;12; Calculate the sample mean and the sample standard deviation to one decimal place using a TI-83+orTI-84 calculator.

Q.2.35

Page 119

Two students, John and Ali, from different high schools, wanted to find out who had the highest GPA when compared to his school. Which student had the highest GPA when compared to his school?

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