Consider the following distribution :

Marks obtained	$0-10$	$10-20$	$20-30$	$30-40$	$40-50$
No. of students	$8$	$10$	$22$	$40$	$20$

Determine the pass marks if $85\%$ of the students pass the exam.

Given below is the distribution of daily earning of $60$ workers in a factor :

If $55\%$ of the workers fulfill their requirements, find the minimum daily earning to meet the requirements of a worker.

Determine the value of the mode for the following sets of data:

$10,11,10,12,11,10,11,11,11,12,13,11,12$

Determine the value of the mode for the following sets of data:

In a class test, the marks (out of $10$) of $30$ students were:

$5,3,6,5,5,4,1,3,8,4,3,6,5,4,8,2,5,4,4,4,3,7,2,4,5,4,8,9,10,7$

Draw a tally chart and a frequency table. Hence, find

The mean

In a class test, the marks (out of $10$) of $30$ students were:

$5,3,6,5,5,4,1,3,8,4,3,6,5,4,8,2,5,4,4,4,3,7,2,4,5,4,8,9,10,7$

Draw a tally chart and a frequency table. Hence, find

the median

In a class test, the marks (out of $10$) of $30$ students were:

$5,3,6,5,5,4,1,3,8,4,3,6,5,4,8,2,5,4,4,4,3,7,2,4,5,4,8,9,10,7$

Draw a tally chart and a frequency table. Hence, find

the mode

At a shooting competition, the scores of a competitor were as follows:

What was his total score? 

At a shooting competition, the scores of a competitor were as follows:

What was his mean score?