
Homework #5.7: Interpreting Linear Regression
Quiz
•
Mathematics
•
KG
•
Medium
+4
Standards-aligned
Ms. Forsythe
Used 3+ times
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13 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Which of the following statements are supported by the scatterplot?
I. There is a positive association between height and volume.
II. There is an outlier in the plot.
III. As the height of a cherry tree increases, the volume of useable lumber it yields increases.
Tags
CCSS.8.SP.A.1
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The linear regression equation is y = 61.93x - 1.79. According to the model, the slope can be interpreted as:
After 0 hours of driving, they went 61.93 miles.
They drove at a speed of 61.93 miles per hour.
They drove 61.93 miles total.
They drove 61.93 hours total.
Tags
CCSS.HSF.LE.B.5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The equation y = -2x + 7 models the amount of gas remaining in a lawnmower after x hours of use since it was filled. What is the meaning of the slope?
For each hour of mowing, the mower is predicted to use 2 gallons.
the predicted amount of gas the lawnmower can hold is 2 gallons
For every two hours of mowing, the mower is predicted to use 7 gallons.
The predicted amount of gas remaining after 1 hour is 2 gallons.
Tags
CCSS.HSF.LE.B.5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which choice correct describes the relationship between the two variables?
As the number of people flying kites increases, the number of people playing volleyball increases.
As the number of people flying kites increases, the number of people playing volleyball decreases.
There is no relationship between the variables.
Tags
CCSS.HSF-LE.A.1B
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
The scatter plot below shows the number of books read by students in Mrs. Hall’s English class and their final grades. Which statement represents the best description about the regression equation?
The more books students read, the lower their English grade.
The more books students read, the higher their English grade.
The fewer books students read, the higher their English grade.
No relationship exists between the number of books students read and their English grades.
Tags
CCSS.HSF.LE.B.5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Interpret the y - intercept for the linear regression equation
(predicted weight) = 100 + 40(age)
for the weight of rats in grams and age is in weeks.
The y-intercept is 100 which means the rat is predicted to weigh about 100 grams at birth.
The y-intercept is about 100, which means the rats gain about 100 grams a week.
The y-intercept is 40 which means rats are predicted to weigh 40 grams at birth.
The y-intercept is 40 which indicates that the rats grow about 40 grams per week.
Tags
CCSS.HSF.LE.B.5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Leslie cleans the barns for the horses. Her time spent cleaning can be modeled by the equation y = 15 x + 30, where x represents the number of stalls that contains horses. What is the meaning of the y-intercept?
The time it takes to clean one horse
the time it takes to clean one stall
the time it takes to clean an empty barn
the times it takes to clean each of the stalls with a horse
Tags
CCSS.HSF.LE.B.5
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