The accompanying data are the length (in centimeters) and girths (in centimeters) of 12 harbor seals. Find the equation of the regression line. Then construct a scatter plot of the data and draw the regression line. Then use the regression equation to predict the value of y for each of the given x-values, if meaningful. If the x-value is not meaningful to predict the value of y, explain why not. (a) x=140 cm (b) x=172 cm (c) x=164 cm (d) x=158 cm Length, x Girth, y 137 107 168 130 153 117 146 106 160 124 160 120 123 103 137 104 155 119 148 111 146 107 145 110 (a) The equation of the regression line is y= x+ . (Round to two decimal places as needed.) Construct a scatter plot of the data and draw the regression line. Plot length on the horizontal axis and girth on the vertical axis. (b) Predict the girth for a length of 140 cm, if it is meaningful. Select the correct choice below and, if necessary, fill in the answer box within your choice. Fill for y if necessary A. y= cm (Round to two decimal places as needed.) B. It is not meaningful to predict this value of y because x=140 is inside the range of the original data. C. It is not meaningful to predict this value of y because x=140 is not an x-value in the original data. (c) Predict the girth for a length of 172 cm, if it is meaningful. Select the correct choice below and, if necessary, fill in the answer box within your choice. fill Y if necessary A. y= cm (Round to two decimal places as needed.) B. It is not meaningful to predict this value of y because x=172 is well outside the range of the original data. C. It is not meaningful to predict this value of y because x=172 is not an x-value in the original data. (d) Predict the girth for a length of 164 cm, if it is meaningful. Select the correct choice below and, if necessary, fill in the answer box within your choice. fill for y if necessary A. y=nothing cm (Round to two decimal places as needed.) B. It is not meaningful to predict this value of y because x=164 is not an x-value in the original data. C. It is not meaningful to predict this value of y because x=164 is inside the range of the original data. (e) Predict the girth for a length of 158 cm, if it is meaningful. Select the correct choice below and, if necessary, fill in the answer box within your choice. Fill for Y if necessary A. y= cm (Round to two decimal places as needed.) B. It is not meaningful to predict this value of y because x=158 is inside the range of the original data. C. It is not meaningful to predict this value of y because x=158 is not an x-value in the original data

The accompanying data are the length (in centimeters) and girths (in centimeters) of 12 harbor seals. Find the equation of the regression line. Then construct a scatter plot of the data and draw the regression line. Then use the regression equation to predict the value of y for each of the given x-values, if meaningful. If the x-value is not meaningful to predict the value of y, explain why not. (a) x=140 cm (b) x=172 cm (c) x=164 cm (d) x=158 cm Length, x Girth, y 137 107 168 130 153 117 146 106 160 124 160 120 123 103 137 104 155 119 148 111 146 107 145 110 (a) The equation of the regression line is y= x+ . (Round to two decimal places as needed.) Construct a scatter plot of the data and draw the regression line. Plot length on the horizontal axis and girth on the vertical axis. (b) Predict the girth for a length of 140 cm, if it is meaningful. Select the correct choice below and, if necessary, fill in the answer box within your choice. Fill for y if necessary A. y= cm (Round to two decimal places as needed.) B. It is not meaningful to predict this value of y because x=140 is inside the range of the original data. C. It is not meaningful to predict this value of y because x=140 is not an x-value in the original data. (c) Predict the girth for a length of 172 cm, if it is meaningful. Select the correct choice below and, if necessary, fill in the answer box within your choice. fill Y if necessary A. y= cm (Round to two decimal places as needed.) B. It is not meaningful to predict this value of y because x=172 is well outside the range of the original data. C. It is not meaningful to predict this value of y because x=172 is not an x-value in the original data. (d) Predict the girth for a length of 164 cm, if it is meaningful. Select the correct choice below and, if necessary, fill in the answer box within your choice. fill for y if necessary A. y=nothing cm (Round to two decimal places as needed.) B. It is not meaningful to predict this value of y because x=164 is not an x-value in the original data. C. It is not meaningful to predict this value of y because x=164 is inside the range of the original data. (e) Predict the girth for a length of 158 cm, if it is meaningful. Select the correct choice below and, if necessary, fill in the answer box within your choice. Fill for Y if necessary A. y= cm (Round to two decimal places as needed.) B. It is not meaningful to predict this value of y because x=158 is inside the range of the original data. C. It is not meaningful to predict this value of y because x=158 is not an x-value in the original data

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

The accompanying data are the length (in centimeters) and girths (in centimeters) of

harbor seals. Find the equation of the regression line. Then construct a scatter plot of the data and draw the regression line. Then use the regression equation to predict the value of y for each of the given x-values, if meaningful. If the x-value is not meaningful to predict the value of y, explain why not.

(a)

x=140

(b)

x=172

(c)

x=164

(d)

x=158

Length, x Girth, y
137 107
168 130
153 117
146 106
160 124
160 120
123 103
137 104
155 119
148 111
146 107
145 110

(a)

The equation of the regression line is

y= x+ .

(Round to two decimal places as needed.)

Construct a scatter plot of the data and draw the regression line. Plot length on the horizontal axis and girth on the vertical axis.

(b) Predict the girth for a length of

140

cm, if it is meaningful. Select the correct choice below and, if necessary, fill in the answer box within your choice.

Fill for y if necessary

cm (Round to two decimal places as needed.)

It is not meaningful to predict this value of y because

x=140

is inside the range of the original data.

It is not meaningful to predict this value of y because

x=140

is not an x-value in the original data.

172

cm, if it is meaningful. Select the correct choice below and, if necessary, fill in the answer box within your choice.

fill Y if necessary

cm (Round to two decimal places as needed.)

It is not meaningful to predict this value of y because

x=172

is well outside the range of the original data.

It is not meaningful to predict this value of y because

x=172

is not an x-value in the original data.

(d) Predict the girth for a length of

164

cm, if it is meaningful. Select the correct choice below and, if necessary, fill in the answer box within your choice.

fill for y if necessary

y=nothing

cm (Round to two decimal places as needed.)

It is not meaningful to predict this value of y because

x=164

is not an x-value in the original data.

It is not meaningful to predict this value of y because

x=164

is inside the range of the original data.

(e) Predict the girth for a length of

158

cm, if it is meaningful. Select the correct choice below and, if necessary, fill in the answer box within your choice.

Fill for Y if necessary

cm (Round to two decimal places as needed.)

It is not meaningful to predict this value of y because

x=158

is inside the range of the original data.

It is not meaningful to predict this value of y because

x=158

is not an x-value in the original data

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