Have an account?
Skip to Content
Build your own quiz
Suggestions for you
20 questions
Show Answers
See Preview
- 1. Multiple Choice
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.
- 2. Multiple Choice
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.
- 3. Multiple Choice
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
- 4. Multiple ChoiceDescribe the correlation in the graph shown.Strong NegativeStrong PositiveWeak NegativeWeak Positive
- 5. Multiple ChoiceIf Gold's Gym is looking to buy 30 TVs, how much will each one cost?40075012500
- 6. Multiple ChoiceThe scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many chapters would be in a book with 180 pages.12 chapters15 chapters18 chapters21 chapters
- 7. Multiple Choice
The range of a function is:
the domain
the x-values
the algebra values
the y-values
- 8. Multiple Choice
The x-values of a function can also be called:
the dependent values
the maximum minus the minimum
the domain
the range
- 9. Multiple ChoiceWhat would be the correlation between study time and test grades?positivenegativenonecannot be determined
- 10. Multiple Choice
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.
- 11. Multiple Choice
What type of correlation best describes the scatter plot shown?
positive, weak
positive, strong
negative, weak
no correlation
- 12. Multiple Choice
Which example shows CAUSATION? (Which one CAUSED the other to happen?)
High social media usage and reduced grades.
Car ran out of gas and being stranded on the side of the road.
Recess time and number of friends.
A person's age and what kind of cereal they eat.
- 13. Multiple Choice
Data is collected comparing sales of cars and the age of the salesperson. After analyzing the data, it is determined that the correlation coefficient is 0.19. What does this mean?
There is no correlation between sales and age.
There is a strong positive correlation between sales and age.
There is a strong negative correlation between sales and age.
There is a weak negative correlation between sales and age.
- 14. Multiple Choice
Estimate the correlation coefficient for this scatterplot.
r = 1.2
r = 0.89
r = 0
r = -0.89
- 15. Multiple Choice
Which with is the line of best fit?
A) Black
B) Orange
C) Red
D) Blue
- 16. Multiple Choice
If x is temperature and y is coffee sales, use the following formula to determine the coffee sales on a 34° day.
y = -60x+6443
$4403
$4673
$8483
$6443
- 17. Multiple Choice
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.
- 18. Multiple Choice
What is the y-intercept in the following equation: y= -5 - 4x?
-4
-4x
5
-5
- 19. Multiple Choice
What is the slope in the following equation: y= 6 - 2/3x?
2/3
6
-6
-2/3
- 20. Multiple Choice
Rich is a member of a gym. He pays a monthly fee plus a per-visit fee. The equation below represents the monthly amount Rich pays for his membership to the gym per month for x visits.
y= 10 + 3x
What does the y-intercept of the graph of this equation represent?
The monthly fee
How much Rich pays per visit
The number of times Rich goes to the gym
The total cost at the end of the month
- Answer choicesTagsAnswer choicesTags