WorksheetsSectional 12 Study Guide
Total questions: 20
Worksheet time: 10mins
The graph above shows a line of best fit for data collected on the distance bicyclists have remaining in relation to the amount of time they have been riding. What is the equation of the line of best fit?
y = -(5/8) x + 170
y = -13x + 200
y = -25x + 170
y = -50x + 90
The graph above shows a line of best fit for data collected on the amount earned by waiters and waitresses last week in relation to the number of tables they served. What is the equation of the line of best fit?
y = (5/3) x + 375
y = (7/2) x + 275
y = (2/1) x + 250
y = (1/3) x + 375
The slope is -5/7, what does that mean?
lose 7 cups of coffee for 5 hours of sleep
lose 5 hours of sleep for 7 cups of coffee
gain 7 cups of coffee for 5 hours of sleep
gain 5 hours of sleep for 7 cups of coffee
A small theme park is trying to determine the number of guests they should expect on a weekend, based on the temperature outside. Based on the trend line, about how many guests should be expected if the temperature is around 80°?
8,000
3,800
8,300
2,000
A group of students did an experiment to see how drinking cups of coffee right before bed affected sleep. The results are shown below in the scatter plot with a line of best fit. Use the given line of best fit to approximate the rate of change relative to the scatter plot.
- (7/5) cup/hours
- (5/7) cup/hours
- (7/5) hours/cup
- (5/7) hours/cup
Looking at the graph, what is the correlation between the x and y variables?
y decreases as x increases
y increases as x decreases
y increases as x increases
y decreases as x decreases
Looking at the graph showing a line of best fit, what is the correlation shown?
Length of life increases as amount of sunlight increases
Length of life decreases as amount of sunlight increases
Length of life decreases as amount of sunlight decreases
Length of life increases as amount of sunlight decreases
What type of association does this graph have?
negative
positive
no association
both negative and positive
What is the correlation?
Negative and Positive correlation
Positive correlation
No correlation
Negative correlation
As the age of the car increases, its value decreases. Which scatterplot represents this relationship?
A
B
C
D
What is a scatter plot?
A graph that shows the relationship of no data set.
A graph that shows the relationship of two data sets.
A graph that shows the relationship of one data set.
A graph that shows the relationship of three data sets.
You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?
As x decreases, y decreases
As x increases, y increases
As y increases, x decreases
As x increases, y decreases
What is the correlation between length of running start and distance of jump?
negative: the less further you run the further you jump
positive: the further you run the further you jump
positive: the further you run the less further you jump
negative: the less further you run the less further you jump
Which of the following lines represents the line of best fit for the scatter plot?
A
B
C
D
What the y-intercept for the line of best fit for the scatter plot?
30
10
70
20
_________________ correlation is when one set of data increases and the other set of data also increases.
Negative and Positive
Negative
Positive
No
_________________ correlation is when one set of data increases and the other set of data decreases.
No
Negative and Positive
Negative
Positive
Which sentence describes the relationship shown on this scatter plot?
As the temperature decreases, the number of visitors decreases.
As the temperature increases, the number of visitors decreases.
As the temperature decreases, the number of visitors increases.
As the temperature increases, the number of visitors increases.
Which sentence describes the relationship shown on this scatter plot?
As the time spent training decreases, the time to run 100 m increases.
As the time spent training increases, the time to run 100 m decreases.
As the time spent training decreases, the time to run 100 m decreases.
As the time spent training increases, the time to run 100 m increases.
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 higher their English grade.
The fewer books students read, the higher their English grade.
The more books students read, the lower their English grade.
The fewer books students read, the lower their English grade.
