Question

(a) Make a scatter plot of the data.

(b) Draw a line of best fit.
(c) Write an equation of the line of best fit
(d) Does the data show a positive, a negative, or no association?
(e) Interpret the relationship.
Answer:

Answer 1

a) For help, plot the points on the graphing calculator.

b) Generate a linear regression equation:

y = -2.2857x + 16.8571

y = (-16/7)x + (118/7)

c) See part b.

d) The data shows a negative association.

e) We expect the number of losses to decrease by about 2.2857 per week. The y-intercept, 16.8571, is meaningless since the gamer received the video game at

x = 0.