![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 14.12.2021 20:00, SillyEve
9. Which equation could be the line of best fit for the scatter plot?
A. y x = + 0.51761 0.90845
B. y x = − + 8235.3 59554
C. y x = − + 0.7546 9.7975
D. y x = − + 0.34855 4.2822
Use the diagrams and information below to answer question 9.
10. What does the y-intercept of the function represent?
A. The average electricity consumption for a daily average temperature of 0°F. B. The electricity consumption for a daily average temperature of 50°F
C. The additional electricity consumption for each additional degree Fahrenheit D. The minimum amount of electricity consumed
11. Which correlation coefficient is most appropriate for the scatter plot shown below? A. r = -1.00
B. r = -0.92
C. r = 0.78
D. r = 1.00
12. Which best describes the correlation coefficient 0.77?
A. Strong Negative B. Weak Negative C. Strong Positive D. Weak Positive
13. Which of the following scatter plots most likely indicates a quadratic regression is most appropriate for the data?
14. A math teacher recorded the number of bathroom breaks per day for each of her students. The numbers are shown below.
1, 8, 4, 1, 0, 5, 2, 3
For this data, which summary statistic is NOT correct?
A. The minimum is 1
B. The lower quartile is 1
C. The median is 2.5
D. The maximum is 8
![answer](/tpl/images/cats/otvet.png)
Answers: 3
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9. Which equation could be the line of best fit for the scatter plot?
A. y x = + 0.51761 0.90845 <...
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