Use graph paper for this question. A survey regarding height (in cm) of $60$ boys belonging to class $10$ of a school was conducted. The given data was recorded.

Find the median.

Height (in cm)	$135-140$	$140-145$	$145-150$	$150-155$	$155-160$	$160-165$	$165-170$
Number of boys	$4$	$8$	$20$	$14$	$7$	$6$	$1$

 

A survey regarding height $\left(\mathrm{in} \mathrm{cm}\right)$ of $60$ boys belonging to class $10$ of a school was conducted. The following data was recorded

Taking $2 \mathrm{cm} =$height of $10 \mathrm{cm}$ along one axis and $2 \mathrm{cm} = 10$ boys along the other axis draw an ogive of the above distribution. Use the graph to estimate lower quartile.

A survey regarding height (in cm) of 60 boys belonging to class 10 of a school was conducted. The given data was recorded.

Taking $2 \mathrm{cm} =$ height of 10 cm along one axis and $2 \mathrm{cm} =10$ boys along the other axis draw an ogive of the above distribution. By using the graph If above $158 \mathrm{cm}$ is considered as the tall boys of the class, find the number of boys in the class who are tall.

The daily wages of $80$ workers in a project are given below.

Draw an ogive for the above distribution and use a scale of $2 \mathrm{cm} = \mathrm{Rs}. 50$ on $\mathrm{X} -$ axis and $2 \mathrm{cm} =10$ workers on $\mathrm{Y} -$axis. Use the ogive to estimate the median wage of the workers. Write the answer in rupees.

The daily wages of $80$ workers in a project are given below.

Draw an ogive for the above distribution use a scale of $2 \mathrm{cm}=₹ 50$ on $\mathrm{X}-$ axis and $2 \mathrm{cm}=10$ workers on $\mathrm{Y}-$ axis and using the ogive to estimate the lower quartile wage of workers. Write the answer in rupees.

The daily wages of $80$ workers in a project are given below

Draw an ogive for the above distribution use a scale of $2 \mathrm{cm} = \mathrm{Rs}. 50$ $\mathrm{X} -$on  axis and $2 \mathrm{cm} = 10$ workers on $\mathrm{Y} -$ axis using the ogive to find out the number of workers who earn more than $\mathrm{Rs}. 625$ daily.

Calculate the mean of the given distribution using step-deviation method

The table shows the distribution of the scores obtained by$160$ shooters in a shooting competition. Draw an ogive for the distribution.

Take, $2 \mathrm{cm} = 10$ scores on the $\mathrm{X}-$ axis and $2 \mathrm{cm} = 20$ shooters on the $\mathrm{Y} -$ axis.

Use the graph to estimate the median.