Frequency Distribution Table

Construct a histogram from the following distribution of total marks of $40$ students in a class.

Draw a histogram for the following data.

The height(in $\mathrm{cm}$) of students in a class is given below:

$150,151,152,155,164,166,155,156,151,151,157,159,161,168,169,162,163,157,154,$

Find the class interval (in $\mathrm{cm}$) with highest frequency?

The height(in $\mathrm{cm}$) of students in a class is given below:

$150,151,152,155,164,166,155,156,151,151,157,159,161,168,169,162,163,157,154,$

Find the class interval with lowest frequency?

The height(in $\mathrm{cm}$) of students in a class is given below:

$150,151,152,155,164,166,155,156,151,151,157,159,161,168,169,162,163,157,154,$

Arrange the data in a frequency distribution table and find the range

Find the class interval of given frequency distribution table:

The mid-points of the class-intervals are called _____.

The monthly income of a group of $320$  employees in a company is given below.

$\begin{array}{|lccccccc|}\hline \begin{array}{l}\text{ Monthly }\\ \text{ Income (₹) }\end{array}& \begin{array}{c}6000-\\ 7000\end{array}& \begin{array}{c}7000-\\ 8000\end{array}& \begin{array}{c}8000-\\ 9000\end{array}& \begin{array}{c}9000-\\ 10000\end{array}& \begin{array}{c}10000-\\ 11000\end{array}& \begin{array}{c}11000-\\ 12000\end{array}& \begin{array}{c}12000-\\ 13000\end{array}\\ \begin{array}{l}\text{ No. of }\\ \text{ Enployees }\end{array}& 20& 45& 65& 95& 60& 30& 5\\ \hline\end{array}$

Draw an ogive of the given distribution on a graph sheet taking $2 cm=1000$ on one axis and $2 cm=50$ employees on the other axis. From the graph determination, if the salary of senior employee is above $₹11,500$ find the number of senior employees in the company.