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Chapter 2: Q. 2.23 (page 50)

In Exercises 2.20-2.25, we have presented some simple qualitative data sets for practicing the concepts. For each data set,

a. determine a frequency distribution.

b. obtain a relative-frequency distribution.

c. draw a pie chart.

d. Construct a bar chart.

Short Answer

Expert verified

Part(a) The frequency distribution is,

ClassTally marksFrequency
AIIII4
BIII3
CI1
DII2
Total
10

Part(b) The relative frequency distribution is,

ClassFrequencyRelative Frequency
A40.4
B30.3
C10.1
D20.2
Total101

Part(c) The pie chart is,

Part(d) The bar chart is as follows,

Step by step solution

01

Part(a) Step 1. Given Information. 

We are given,

02

Part(a) Step 2. Finding the frequency distribution. 

The frequency distribution is as follows,

ClassTally marksFrequency
AIIII4
BIII3
CI1
DII2
Total
10
03

Part(b) Step 1. Finding the relative frequency distribution. 

The relative frequency distribution is given by,

Relative frequency=FrequencyNumber of observations

The relative frequency distribution is as follows,

ClassFrequencyRelative Frequency
A40.4
B30.3
C10.1
D20.2
Total101
04

Part(c) Step 1. Drawing the Pie chart. 

The pie chart is as follows,

05

Part(d) Step 1. Drawing the bar chart. 

The bar chart is as follows,

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