1. We have a negative relationship between number of drinks consumed and number
ID: 3330929 • Letter: 1
Question
1. We have a negative relationship between number of drinks consumed and number of marks in a driving test. One individual scores 3 on number of drinks consumed, another individual scores 5 on number of drinks consumed. What will be their respective scores on the driving test if the intercept is 18 and the slope -3? o A. Driving test scores (y-axis) will be 27 [individual who scored 3 on drink consumption and 33 [individual who scored 5 on drink consumption]. o B. It is not possible to predict from negative relationships. o C. Driving test scores (y-axis) will be 9 [individual who scored 3 on drink consumption and 3 [individual who scored 5 on drink consumption]. o D. Driving test scores (y-axis) will be 51 and 87 [individual who scored 5 on drink consumption]. 2.lf b 0 the line of best fit will conventionally be drawn A. as vertical. B. as horizontal. C. as provides the best fit to the scores. D. through the middle of the data points. - . 3. On a scatterplot, the regression line - A. is drawn parallel to the horizontal axis. B. is always perpendicular to the vertical axis. C. comes as close as possible to touching every score - D. touches at least half of the scores. 4. A perfect association between variables can be seen on a scatter plot when - A. all dots lie an equal distance from the regression line . B. all dots lie on the regression line C. the regression line forms a right angle at its intersection with the X axis. D. the regression line is parallel to the X axis. . 5. If the regression line showing association between "years of education" and "income" has a slope of 1000, A. the variables are not related. B. every year of education increases income by 1000 - C. every change in education increases income. . D. the Y intercept would be 1.00.Explanation / Answer
1, For x = 3,
y = -3(3) + 18 = 9
For x = 5,
y = -3(5) + 18 = 3
Hence,
Option C is correct.
2. Option B is correct.
3. Option C is correct.
4. Option B is correct.
5. Option B is correct.
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