Unit Test #50

Select your answers to the following 10 questions from the pop-up menus in the right hand column. Clicking the "Begin Test Again" button will clear all the answers.

 

Q1:

 

When a sample does not accurately represent the group from which it is taken this is called A. a census
B. a biased sample
C. a random sample
D. a population

Answer 1:

 

 

Q2:

 

Which of the following could not be used to represent the average of a set of statistical data? A. range
B. mean
C. median
D. mode

Answer 2:

 

 

Q3:

 

Which of the following could be used to show the spread of a set of data? A range
B. median 
C. mode
D. mean

Answer 3:

 

 

Q4:

 

The mean of 2, 4, 6 and 6 is
 
A. 4.5 
B. 5
C. 6
D. 4

Answer 4:

 

 

Q5:

 

The range of 2, 4, 6 and 6 is
 
A. 4.5
B. 5
C. 6
D. 4

Answer 5:

 

 

Q6:

 

The median of 2, 4, 6 and 6 is
 
A. 4.5
B. 5
C. 6
D. 4

Answer 6:

 

 

Q7:

 

 
The mode of 2, 4, 6 and 6 is
A. 4.5
B. 5
C. 6
D. 4

Answer 7:

 

 

Q8:

 

Which type of graph would be best to compare the medians of two samples?   A. bar graph
B. pie chart
C. box and whisker 
graph
D. stem and leaf 
graph

Answer 8:

 

 

Q9:

 

On a box and whisker graph, the whiskers give an indication of A. the quartiles
B. the median 
C. out-lying values
D. the mean

Answer 9:

 

 

Q10:

 

A survey which covers everymember of a population is called A. a random sample
B. a biased sample
C. a census
D. an election

Answer 10: