The wights of 45 chilren in a class are listed below.

Make a frequency table and draw a histogram

First let us understand what frequency table is and why it is made.

The table that is constructed based on the data values with its corresponding frequency is termed as frequency table. Frequency of a data is nothing but the number of times the data value occurs.

We make frequency table for ease of observation.

Let us try making frequency table using the values given in the question…

First, look at what is already given in the question. That is, the weight of 45 children in a class.

Try to list the numbers in an order (either ascending or descending), this will make our frequency table presentable and neat.

Now,

For histogram, represent it into a tabular form consisting of class intervals and midpoints.

Take class width of 10 and frequency is given by number of children.

Take these midpoints in x-axis and number of children in y-axis, then plot on a graph paper preferably.

This is the histogram we are looking for.