## Frequency Test

Unit Test #47

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:

Which type of graph is best for showing a frequency distribution for grouped continuous data? A. bar graph
B. pie chart
C. histogram
D. column graph

Q2:

The graph shows measurements to the nearest cm.

What is the frequency of heights between 171 and 181?

A. 3
B. 4
C. 5

D. 6

Q3:

What is the modal class in the graph above?

A. 161 -171
B. 171 - 181
C. 181 - 191
D. 191 - 200

Q4:

Which interval would contain the median? A. 161 -171
B. 171 - 181
C. 181 - 191
D. 191 - 200

Q5:

Estimate the median height from the graph above.

A. 180 cm
B. 185 cm
C. 190 cm
D. 195 cm

Q6:

In question 5, what is the upper quartile? A. 178 cm
B. 185 cm
C. 187 cm
D. 193 cm

Q7:

The table shows the number of CDs bought by 20 people in a month.

 No. of CDs Frequency (f) 0 4 1 7 2 6 3 3

How many people bought more than 1 CD?

A. 7
B. 4
C. 16
D. 9

Q8:

In question 5, what is the mean number of CDs bought? A. 1.4
B. 1
C. 1.5
D. 2

Q9:

In question 5, what is the range of the number of CDs bought? A. 3
B. 4
C. 6
D. 7

Q10:

The value with the highest frequency in a frequency distribution is called:

A. the median
B. the mode
C. the mean
D. the range