Q2: The data of weekly wages of 40 workers in Rs. are as follows. Taking class interval as
20, prepare a frequency distribution in which 130-149 is one of the classes. [5]
75 100 220 175 82 131 147 117 162 140
135 162 229 99 168 70 200 137 156 142
178 155 114 138 100 112 93 196 89 217
182 225 110 101 210 201 183 193 96 213
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I am not understanding your questions
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Answer:
Smallest obs = 70
Largest obs = 229
Class interval = 20
Given class = 130-149
class lenght = Range÷ no. of class
20=229-70 ÷ no. of class(x)
x = 159÷20
x= 7.95 no of class= 8
classs. frequnecy
70-89. 4
90-109. 6
110-129. 4
130-149. 7
150-169. 6
170-189. 4
190-209. 3
210-229. 6
-----------------------------------------
Total. =. 40
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