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WorksheetsA Quick Stat Review
Total questions: 20
Worksheet time: 23mins
A correlation value (r) that has a strong, positive linear association would have a value close to
1
0
-1
Cannot be answered
Estimate the correlation coefficient for this scatterplot.
A) r = 1.2
B) r = 0.89
C)r = 0
D) r = -0.89
Estimate the correlation coefficient for this scatterplot.
A) r = -0.9
B) r = 1
C) r = 0.9
D) r = -1
Which with is the line of best fit?
A) Black
B) Orange
C) Red
D) Blue
What type of correlation does this graph show?
A) Positive
B) negative
C) none
D) all of the above
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?
A) The more books students read, the lower their English grade.
B) The more books students read, the higher their English grade.
C) The fewer books students read, the higher their English grade.
D) No relationship exists between the number of books students read and their English grades.
Shape?
Skewed right
Skewed left
Symmetric
Normal
is y= 1/2x +1
How many laps can a bicycle
make around the park in
23 minutes?
Janice is saving money for retirement. The equation y = 500x + 12,000 models her retirement savings where y is the total she has saved in dollars, and x is the number of months.
Interpret the y-intercept.
Janice started with $500 in her account
Janice started with $12,000 in her account
Each month, Janice saves an additional $500
Each month, Janice saves an additional $12,000
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?
A data set can have more than one median. True or false?
True
False
Describe the shape of the graph.
Skewed right
Skewed left
Random
Symmetrical
