
Linear Regression Analysis and Correlation

Quiz
•
Mathematics
•
10th Grade
•
Hard
+2
Standards-aligned
K. Mariani
Used 5+ times
FREE Resource
13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The computer output below shows the result of a linear regression analysis. for predicting the concentration of zinc, in parts per million (ppm), from the concentration of lead, in ppm, found in fish from a certain river.
Which of the following statements is a correct interpretation of the value 19.0 in the output?
On average there is a predicted increase of 19.0 ppm in concentration of lead for every increase of 1 ppm in concentration of zinc found in the fish.
On average there is a predicted increase of 19.0 ppm in concentration of zinc for every increase of 1 ppm in concentration of lead found in the fish.
The predicted concentration of zinc is 19.0 ppm in fish with no concentration of lead.
The predicted concentration of lead is 19.0 ppm in fish with no concentration of zinc.
Approximately 19% of the variability in zinc concentration is predicted by its linear relationship with lead concentration.
Tags
CCSS.HSF.LE.B.5
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
3.3 F
16.5 F
25.2 F
28.5 f
41.7 F
Tags
CCSS.HSF.LE.B.5
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The height h and collar size c, both in centimeters, measured from a sample of boys were used to create the regression line c = -94 + 0.9h. The line is used to predict collar size from height, both in centimeters, for boys' shirt collars.
Which of the following has no logical interpretation in context?
The predicted collar size of a boy with height 140 cm
The h values in the sample
The c values in the sample
The slope of the regression line
The c-intercept of the regression line
Tags
CCSS.HSF.LE.B.5
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
y = -5 + 3x
y = 3x
y = 5+2.5x
y = 8.5+.3x
y = 10+.4x
Tags
CCSS.8.EE.B.5
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A field researcher who studies lions conjectured that the more time a cub spends playing, the sooner the cub will begin to hunt. Observational data wee collected from 20 lion cubs. The researcher recorded how long they spent playing and the age when they began hunting. Because male and female lions have different hunting behaviors, the researcher recorded the data for males and females separately. The two scatterplots show the data for the 10 female lions and the 10 male lions.
For which gender does there appear to be evidence that the more time a lion cub spends playing, the sooner the cub is likely to begin hunting?
For female cubs only
For male cubs only
For both male cubs and female cubs, with equal evidence
For both male cubs and female cubs, with more evidence for female cubs than for male cubs
For neither male cubs nor female cubs
Tags
CCSS.HSF.LE.B.5
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suppose a certain scale is not calibrated correctly, and as a result, the mass of any object is displayed as 0.75 kilogram less than its actual mass. What is the correlation between the actual masses of a set of objects and the respective masses of the same set of objects displayed by the scale?
-1
-0.75
0
0.75
1
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
For a random sample of 20 professional athletes, there is a strong, linear relationship between the number of hours they exercise per week and their resting heart rate. For the athletes in the sample, those who exercise more hours per week tend to have lower resting heart rates than those who exercise less. Which of the following is a reasonable value for the correlation between the number of hours athletes exercise per week and their resting heart rate?
0.71
0.00
-0.14
-0.87
-1.00
Tags
CCSS.HSS.ID.C.8
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