Linear Regression Key Features
Authored by JACOB WOLF
Mathematics
9th - 12th Grade
CCSS covered
Used 1+ times
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8 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Data was collected on the weight of a male laboratory rat for the first 25 weeks after its birth. The linear regression equation is y= 40x+100, where x is number of weeks and y is weight in grams. What does the y-intercept mean in context of the problem?
The predicted weight of the rat in year 0.
The predicted weight of the rat at birth.
The current weight of the rat.
The average increase in the rat's weight.
Tags
CCSS.HSF.LE.B.5
2.
MULTIPLE CHOICE QUESTION
2 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
5 mins • 1 pt
A restaurant sells pizza for the prices in the data table. Calculate the linear regression equation of the data.
y = 1.5x + 12
y = 12x + 1.5
y = 0.67x - 8
y = -8x + 0.67
Tags
CCSS.8.EE.C.8C
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Describe the correlation in the graph shown.
Tags
CCSS.HSF-LE.A.1B
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If Gold's Gym is looking to buy 30 TVs, how much will each one cost?
Tags
CCSS.HSF.IF.A.2
6.
MULTIPLE CHOICE QUESTION
2 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 line of best fit?
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.A.1B
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Estimate the correlation coefficient for this scatterplot.
r = 1.2
r = 0.89
r = 0
r = -0.89
Tags
CCSS.HSS.ID.C.8
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