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Homework Practice

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Statistics: Practice 3

Section A: Core Practice

Question 1mcq
A test score has weight 22 and project score has weight 11. If the scores are 8080 and 9595, what is the weighted average?
A.175175
B.9090
C.87.587.5
D.8585
Question 2mcq
Which is a statistical investigative question?
A.Is 77 a prime number?
B.How many hours do students in Grade 9 study on a typical weekday?
C.What is the formula for area of a circle?
D.What is 2+32+3?
Question 3mcq
Which feature can make a bar graph misleading?
A.Labelling both axes clearly.
B.Using equal scale intervals.
C.Showing the data source.
D.Starting the vertical axis at a high non-zero value without warning.
Question 4mcq
Which is a statistical investigative question?
A.Is 77 a prime number?
B.What is the formula for area of a circle?
C.How many hours do students in Grade 9 study on a typical weekday?
D.What is 2+32+3?
Question 5mcq
A test score has weight 22 and project score has weight 11. If the scores are 8080 and 9595, what is the weighted average?
A.9090
B.87.587.5
C.8585
D.175175

Section B: Application Practice

Question 6mcq
Which is a statistical investigative question?
A.What is 2+32+3?
B.Is 77 a prime number?
C.How many hours do students in Grade 9 study on a typical weekday?
D.What is the formula for area of a circle?
Question 7mcq
Which feature can make a bar graph misleading?
A.Using equal scale intervals.
B.Labelling both axes clearly.
C.Starting the vertical axis at a high non-zero value without warning.
D.Showing the data source.
Question 8mcq
Which is a statistical investigative question?
A.What is 2+32+3?
B.Is 77 a prime number?
C.How many hours do students in Grade 9 study on a typical weekday?
D.What is the formula for area of a circle?
Question 9mcq
A test score has weight 22 and project score has weight 11. If the scores are 8080 and 9595, what is the weighted average?
A.175175
B.87.587.5
C.9090
D.8585
Question 10mcq
Which is a statistical investigative question?
A.How many hours do students in Grade 9 study on a typical weekday?
B.What is the formula for area of a circle?
C.What is 2+32+3?
D.Is 77 a prime number?