Answer to Question #171766 in Statistics and Probability for Manzar

Question

Following data gives the weights of 40 students at a university.

138 164 150 132 144 125 149 157 146 158 140 147 136

148 152 144 168 126 138 176 163 119 154 165 156 173

142 147 135 153 140 135 161 145 135 142 150 156 145

128

Tabulate the data into frequency distribution taking 9 as interval. Also construct histogram, 

frequency polygon and ogive.

Answer 1

Solution:

We take the class width of 9 as given. So, our first interval is 119-128 and so on.

Note that 128 is included in 119-128, not in 128-137, and so on.

First, we draw a frequency distribution table as follows:

Now, we create a histogram and frequency polygon respectively as follows:

Following is the less than type ogive for that we form cumulative table also.