The heights (inAns cm) of 30 students of a class are given below:
161, 155, 159, 153, 150, 158, 154, 158, 160, 148, 149, 162, 163, 159, 148,
153, 157, 151, 154, 157, 153, 156, 152, 156, 160, 152, 147, 155, 155, 157.
Prepare a frequency table as well as a cumulative frequency table with 160 – 165 (165 not included) as one of the class intervals.

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Solution

Class tally marks Frequency Cumulative frequency

145-150 4 4

150-155 9 4 + 9 = 13

155-160 12 13 + 12 = 25

160-165 5 25 + 5 = 30

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Similar questions

The heights (in cm) of 30 students of a class are given below:
161, 155, 159, 153, 150, 158, 154, 158, 160, 148, 149, 162, 163, 159, 148, 153, 157, 151, 154, 157, 153, 156, 152, 156, 160, 152,147,155,155,157.
Prepare a frequency table as well as a cumulative frequency table with 160-165 (165 not included) as one of the class intervals.

Q. The heights (in cm) of 30 students of class IX are given below:
155, 158, 154, 158, 160, 148, 149, 150, 153, 159, 161, 148, 157, 153, 157, 162, 159, 151, 154, 156, 152, 156, 160, 152, 147, 155, 163, 155, 157, 153

Prepare a frequency distribution table with 160-164 as one of the class intervals.

Question 4 (i)
The heights of 50 students, measured to the nearest centimeters, have been found to be as follows:
$\begin{matrix} 161 & 150 & 154 & 165 & 168 & 161 & 154 & 162 & 150 & 151 162 & 164 & 171 & 165 & 158 & 154 & 156 & 172 & 160 & 170 153 & 159 & 161 & 170 & 162 & 165 & 166 & 168 & 165 & 164 154 & 152 & 153 & 156 & 158 & 162 & 160 & 161 & 173 & 166 161 & 159 & 162 & 167 & 168 & 159 & 158 & 153 & 154 & 159 \end{matrix}$
(i) Represent the data given above by a grouped frequency distribution table, taking the class intervals as 160 - 165, 165 - 170, etc.

Question 95(ii)

The weights (in kg) of 30 students of a class are as follows :
39, 38, 36, 38, 40, 42, 43, 44, 33, 33, 31, 45, 46, 38, 37,
31, 30, 39, 41, 41, 46, 36, 35, 34, 39, 43, 32, 37, 29, 26
Prepare a frequency distribution table using one class interval as (30-35), 35 not included.
Which class has the maximum frequency ?

Q. Heights in cm of 12 students are given as:

154, 158, 155, 160, 165, 145, 148, 150, 147, 151, 166, 152

Make a frequency table taking 145-150 as first class interval.

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Class	tally marks	Frequency	Cumulative frequency
145-150		4	4
150-155		9	4 + 9 = 13
155-160		12	13 + 12 = 25
160-165		5	25 + 5 = 30

Class tally marks Frequency Cumulative frequency 145-150 4 4 150-155 9 4 + 9 = 13 155-160 12 13 + 12 = 25 160-165 5 25 + 5 = 30

Class tally marks Frequency Cumulative frequency

145-150 4 4

150-155 9 4 + 9 = 13

155-160 12 13 + 12 = 25

160-165 5 25 + 5 = 30