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For item nos. 45-46. Determine which scatterplot is being described in each question. A. b. C. d.

For item nos. 45-46. Determine which scatterplot is being described in each question. A. b. C. d.

MATLAB: An Introduction with Applications
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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For item nos. 45-46. Determine which scatterplot is being described in each question. 8. b. C correlation? d. 45. Which of the scatter plots above shows positive A. scatter plot f only B. scatter plots b and f C. scatter plot b only D. scatter plots b and e 46. Which of the scatter plots shows a positive correlation with points widely spread apart? A. scatter plot a B. scatter plot b C. scatter plot c D. scatter plot f 47. If the points on the scatter graph follow a trend of rising from right to left, how will you describe the correlation of the variables involved? A. moderate B. positive C. negative D. zero 48. Raquel noticed that the higher number of members in the family living together corresponds to lower performance of the student. What conclusion can you draw from the direction of correlation? A. The variables have zero correlation. B. The variables have positive correlation. C. The variables have negative correlation. D. The variables have moderate correlation. 49. Gladys sells restaurant discount cards as part of a fund raiser to support health workers during the pandemic. The equation y = -10x + 500 models his selling where y is the total number of cards and x is the number of days. What does the value of the slope indicate? A. Gladys starts with 500 cards to sell. C. Nathan earns 500 pesos for every 10 cards he sells. B. Nathan is selling 500 cards over 10 days. D. There is a decrease of 10 cards dally on the total number of cards. 50. What does slope represent? A. predicted value of y C. variation around the line of regression B. predicted value of y when x = 0 D. estimated change of y per unit change in x
Transcribed Image Text:For item nos. 45-46. Determine which scatterplot is being described in each question. 8. b. C correlation? d. 45. Which of the scatter plots above shows positive A. scatter plot f only B. scatter plots b and f C. scatter plot b only D. scatter plots b and e 46. Which of the scatter plots shows a positive correlation with points widely spread apart? A. scatter plot a B. scatter plot b C. scatter plot c D. scatter plot f 47. If the points on the scatter graph follow a trend of rising from right to left, how will you describe the correlation of the variables involved? A. moderate B. positive C. negative D. zero 48. Raquel noticed that the higher number of members in the family living together corresponds to lower performance of the student. What conclusion can you draw from the direction of correlation? A. The variables have zero correlation. B. The variables have positive correlation. C. The variables have negative correlation. D. The variables have moderate correlation. 49. Gladys sells restaurant discount cards as part of a fund raiser to support health workers during the pandemic. The equation y = -10x + 500 models his selling where y is the total number of cards and x is the number of days. What does the value of the slope indicate? A. Gladys starts with 500 cards to sell. C. Nathan earns 500 pesos for every 10 cards he sells. B. Nathan is selling 500 cards over 10 days. D. There is a decrease of 10 cards dally on the total number of cards. 50. What does slope represent? A. predicted value of y C. variation around the line of regression B. predicted value of y when x = 0 D. estimated change of y per unit change in x
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