Regression Lines and Correlation

Quiz
•
Mathematics
•
12th Grade
•
Hard
Standards-aligned
Anthony Clark
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
The correlation coefficient of the regression line is 0.986. What does that mean?
There is a very strong, positive correlation between the variables.
There is a very strong, negative correlation between the variables.
There is a weak, negative correlation between the variables.
As fork length increases, so does total length.
2.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
What does a y-intercept of 4.1 mean?
A shark with fork length of 0cm, will have a total length of 4.1cm.
For each cm the shark get's longer, it's forklength increases by 1.1cm.
For each 1cm increase in forklength, a shark gets 1cm longer.
A shark if longer that it's fork length.
Tags
CCSS.HSF.LE.B.5
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
What is missing from this graph?
suitable title
units of x and y axis
regression line
all of these
Tags
CCSS.8.EE.B.5
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
What is the gradient of the regression line?
1.1
2527
total length (cm) = 1.1forklength (cm) + 4.1
4.1
Tags
CCSS.HSF.LE.B.5
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Using the regression equation: length (cm) = 1.1 forklength (cm) + 4.1 Predict the length of a shark with a fork length of 4cm.
4.1cm
4.4cm
8.5cm
5.2cm
Tags
CCSS.HSF.LE.B.5
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Using the regression equation: length (cm) = 1.1 forklength (cm) + 4.1
Predict the length of a shark with a fork length of 40cm.
41cm
48.1cm
56.1cm
44.1cm
Tags
CCSS.HSF.LE.B.5
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
What does a gradient of 1.1 mean?
Sharks grow in 1.1cm bursts
For each cm the shark get's longer, it's forklength increases by 1.1cm.
For each 1cm increase in forklength, a shark gets 1.1cm longer.
A shark if longer that it's fork length.
Tags
CCSS.HSF.LE.B.5
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