Explanation Given info: Plot ten points and add a point on upper left corner of the plot. Calculation: Applet procedure: Step-by-step applet procedure of the regression is as follows: In statistical applets choose the regression by eye applet . Plot a point by clicking on the blank plot a “a circle appears”. Similarly plot ten points “10 circles appears” Drag the green line according to the scattered points. Click on regression a line appears. The applet output is as follows: From the applet output,the regression equation appears by placing the cursor on the red line in the applet which is Y = 0.6444 X + 2

7th Edition

ISBN: 9780135901021

Author: Larson

Publisher: PEARSON EDUCATION (COLLEGE)

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Chapter 9.2, Problem 2A

To determine

To plot: Ten points on a blank plot, so that they have a strong correlation and record the equation of regression line.

To describe: How the regression line changes after adding a point on the upper left corner of the plot.

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Chapter 9.2, Problem 1A

Chapter 9.2, Problem 3A

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A random sample of beef hotdogs was taken and the amount of sodium (in mg) and calories were measured. The data are in the table. Create a scatter plot and find a regression equation between amount of calories and amount of sodium. Then use the regression equation to find the amount of sodium a beef hotdog has if it is 138 calories and if it is 100 calories. Which sodium level that you calculated do you think is closer to the true sodium level? Why? Calories and Sodium Levels in Beef Hotdogs Calories Sodium 181 477 114 296 184 440 164 495 149 374 180 526 137 251 170 482 133 350 Select the correct scatterplot. 500 400 440 420 400 340 300 200 124010 15 120 125 18015 140 145 150 155 100 45 170 175 Jao Jas I80 4p. 500 400 440 420 400 300 340 300 200 I4oio is 120 125 180 135 140 J45 J50 153 100 165 170o 500 400 440 420 400 300 340 320 300 220 200 1240lio is 120 125 180 1 140 145 150 155 100 165 170 175 Jao Jas J0 4s. The regression equation is y= decimal places if necessary.) (Round to two…

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To plot: Ten points on a blank plot, so that they have a strong correlation and record the equation of regression line. To describe: How the regression line changes after adding a point on the upper left corner of the plot.

Solution Summary: The author explains how the regression line changes after adding a point on the upper left corner of the plot.