Math 225N week 2 Questions with Correct Answers

Math 225N week 2 Questions with Correct
Answers
Question

The frequency table below shows the ages of the students in a psychology lecture hall.

Complete the Relative Frequency column of the table. Enter answers as an unsimplified

fraction.

Provide your answer below:

Age. 17 18 19 20 21 22

Frequency. 9 18 27 30 21 15

Relative Frequency

AgeFrequency

RelativeFrequency

1799120=0.075181818120=0.15192727120=0.225203030120=0.25212121120=0.175221515

120=0.125

Question

The relative frequencies for a set of data are shown in the table below.

ValueRelative Frequency10.1520.3030.4540.10

If there are a total of 40 data values, with what frequency does the data value 1 occur?

Provide your answer below:

Dividing each frequency by the total number of data values gives the relative frequency.

Multiplying the relative frequency by the total number of data values gives the frequency.

, The data value 1 occurs with relative frequency 0.15 in a data set of 40 values, the frequency

of the data value 1 is0.15(40)=6.

The data value 1 occurs 6 times.

Given the relative frequency table below, which of the following is the corresponding

cumulative relative frequency table?

Value

Relative Frequency

2

0.23

3

0.33

4

0.24

5

0.2

Select the correct answer below:

Value

Cumulative relative frequency

20.2330.5640.851

Value