Question
fennie is interested in trying to estimate how satisfaction is influenced by the price of her service in lazada. Using satisfaction as the dependent variable,
fennie is interested in trying to estimate how satisfaction is influenced by the price of her service in lazada. Using satisfaction as the dependent variable, she conducts a simple linear regression and the data shown below:
Customer | Satisfaction (Rating) | Price(RM) |
A | 5 | 5 |
B | 2.5 | 15 |
C | 2 | 18 |
D | 4.5 | 8.5 |
What is the estimated slope for the price and satisfaction?
Select one:
A. -0.319
B. -0.246
C. -0.522
D. -0.923
What is the estimated y-intercept for the price and satisfaction?
Select one:
a. 9.754
b. 2.511
c. 6.396
d. 4.223
If the price of the product is set at RM6, calculate the predicted satisfaction rating.
Select one:
a. 4.15
b. 4.88
c. 11.6
d. 5.0
Question 6 to 10 based on the information given below:
Steven wants to examine the effect of time playing PUBG on the GPA. These data are presented below.
Respondent | Playing mobile legend Time (Hours per day) | GPA |
1 | 7 | 2.3 |
2 | 2 | 3.5 |
3 | 3 | 3.33 |
4 | 2 | 3.95 |
Calculate the total sum of squares (SST).
Select one:
a. 2.51
b. 2.33
c. 1.46
d. 1.35
Calculate the regression sum of squares (SSR).
Select one:
a. 1.35
b. 1.46
c. 2.33
d. 2.51
Calculate the error sum of squares (SSE).
Select one:
a. 0.17
b. 0.11
c. 0.49
d. 0.72
Calculate the coefficient of determination.
Select one:
a. 0.28
b. 0.72
c. 0.92
d. 0.46
Calculate the standard error of the estimate.
Select one:
a. 0.23
b. 0.49
c. 0.67
d. 0.83
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