Correlation Coefficient Practice
Authored by Wayground Content
Mathematics
8th Grade
16 Questions
CCSS covered
Used 50+ times
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A study compared the number of years of education and a person's annual salary. The correlation coefficient of the data was r = 0.913. Which conclusion can be made using the correlation coefficient?
There is a strong positive correlation.
There is a strong negative correlation.
There is no correlation.
There is a weak positive correlation.
Tags
CCSS.HSS.ID.C.8
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The relationship ship between a woman's show size and length of her foot, in inches, is given in the table.
Calculate the line of best fit using the graphing calculator.
a = .25 and b = 7.75
y = .25x + 7.75
r = 1
y = ax + b
Tags
CCSS.8.EE.B.5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
As shown in the table, a person's target heart rate during exercise changes as the person gets older. Use the graphing calculator to find the correlation coefficient (r).
-0.999
-0.664
0.998
1.503
Tags
CCSS.HSS.ID.C.8
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the correlation coefficient of the data characteristics shown?
-.928
.928
.861
-.861
Tags
CCSS.HSS.ID.C.8
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What COULD be the approximate value of the correlation coefficient for the scatter plot?
-.851
-.162
0.211
0.905
Tags
CCSS.HSS.ID.C.8
CCSS.HSS.ID.B.6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The points in the scatter plot show the ages of cars (x) and their price in dollars (y). What could you conclude about the relationship of the data?
Age and price have no correlation.
Age and price have a weak positive relationship.
Age and price have a weak negative relationship.
Tags
CCSS.HSS.ID.C.8
CCSS.HSS.ID.B.6
CCSS.HSS.ID.C.9
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which value of r represents data with a strong negative correlation between two data sets?
-1.07
-0.89
-0.14
0.92
Tags
CCSS.HSF-LE.A.1B
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