R-squared and s

Question 1

Which of the following values could represent the value of r2 for this relationship?

Revolt · Accepted Answer

r2 = 0.9646

Question 2

substantially increases substantially decreases ✔ does not greatly change

Revolt · Accepted Answer

✔ does not greatly change

Question 3

substantially increases substantially decreases ✔ does not greatly change

Revolt · Accepted Answer

✔ does not greatly change

Question 4

X substantially increases ✔ substantially decreasesdoes not greatly change

Revolt · Accepted Answer

✔ substantially decreases

Question 5

The value of r2 for a relationship between distance (in miles) and the cost (in dollars) of a shuttle bus from a hotel to an airport is calculated using computer software. Identify and interpret the value of r2 by completing the sentence.

Revolt · Accepted Answer

The value of r2 = tells us that about of the variation in the of a shuttle bus is accounted for by the linear relationship created with the of the shuttle bus.: 96.80%; The value of r2 = tells us that about of the variation in the of a shuttle bus is accounted for by the linear relationship created with the of the shuttle bus.: 97%; The value of r2 = tells us that about of the variation in the of a shuttle bus is accounted for by the linear relationship created with the of the shuttle bus.: cost; The value of r2 = tells us that about of the variation in the of a shuttle bus is accounted for by the linear relationship created with the of the shuttle bus.: distance (in miles)

Question 6

The value of r2 for a relationship between gallons of gasoline used (explanatory) and the number of miles driven (response) by a certain car is calculated as 96.78%.Which of the following statements is the best interpretation of r2?

Revolt · Accepted Answer

About 96.78% of the variation in the gallons of gasoline of the car is accounted for by the linear relationship created with the number of miles driven.

Question 7

The value of s for a relationship between the number of hours and the number of gallons of water remaining in a tank is calculated using computer software. Identify and interpret the value of s by completing the sentence.

Revolt · Accepted Answer

The value of s = tells us that the average residual is about gallons.: 4.80079; The value of s = tells us that the average residual is about gallons.: gallons; The value of s = tells us that the average residual is about gallons.: 5

Question 8

The value of s for a relationship between number of seconds, x, and number of jumping jacks of an athlete, y, is calculated as 3.0725.Which of the following statements is the best interpretation of s?

Revolt · Accepted Answer

The average residual is about 3.0725 jumping jacks.

Question 9

Complete the sentence that describes the circled point.

Revolt · Accepted Answer

The circled point appears to be a(n) because it follow the pattern of the rest of the data and it has a residual. It also appears that the circled point an influential point on the slope of the regres: outlier; The circled point appears to be a(n) because it follow the pattern of the rest of the data and it has a residual. It also appears that the circled point an influential point on the slope of the regres: does not; The circled point appears to be a(n) because it follow the pattern of the rest of the data and it has a residual. It also appears that the circled point an influential point on the slope of the regres: large; The circled point appears to be a(n) because it follow the pattern of the rest of the data and it has a residual. It also appears that the circled point an influential point on the slope of the regres: is

R-squared and s Answers

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