Frequency Distribution Table

Prepare a frequency distribution by inclusive method taking a class interval of $7$ from the following data.

$28,17,15,22,29,21,23,27,18,12,7,2,9,4,2,8,3,10,5,20,16,12,8,4,33,27,21,15,34,27,18,9,2,4,6,32,31,29,18,14,13,15,11,9,7,2,5,38,32,28,26,24,20,19,25,19,20,6,10$

Prepare a frequency distribution by inclusive method taking a class interval of $7$ from the following data.

$28,17,15,22,29,21,23,27,18,12,7,2,9,4,1,8,3,10,5,20,16,12,8,4,33,27,21,15,3,36,27,18,9,2,4,6,32,31,29,18,14,13,15,11,9,7,1,5,37,32,28,26,24,20,19,25,19,20,6,9$

Class intervals in a grouped frequency are given as $4‐11, 12‐19, 20‐27, 28‐35, 36‐43$. What are the class marks of each class?

Find the size of the class interval:
$$\begin{gathered} 200 - 220 \\ 220 - 240 \\ 240 - 260 \\ 260 - 280 \end{gathered}$$

Find the size of the class interval in the following caes.
$0 - 10$
$10 - 20$
$20 - 30$
$30 - 40$

Find the size of the class interval.

Write the midpoint or class mark and class limits of $25-27.$

Find the class interval of $0-\mathrm{5,5}-\mathrm{10,10}-\mathrm{15,15}-20.$

* The question given in the textbook is Incorrect, so the modified question is as follow

Find the size of the class intervals :$0-5,5-10,10-15,15-20.$

 In a set of data, the lowest and the highest values are $15$ and $66$ respectively. Construct overlapping class intervals with the following class width.

$10$

In the following table, find:

the class width of the intervals

The class mark for a class interval $10-20$ is