Construct the frequency distribution table for the given data.

Given below is the distribution of weekly pocket money received by students of a class. Calculate the pocket money that is received by most of the students.

Find the unknown entries a, b, c, d in the following distribution of heights of students in a class

Given below is a cumulative frequency distribution showing the marks secured by 50 students of a class

Form the frequency distribution table for the above data. 

In a class test, marks obtained by 120 students are given in the following frequency distribution. If it is given that mean is 59, then find the missing frequencies x and y.

The weights of tea in 70 packets are shown in the following table:

Draw the 'less than type' and 'more than type' ogives for the data. 

Write frequency distribution table for the following data:  

The following distribution shows the daily pocket allowance of children of a locality. The mean pocket allowance is RS.18. Find the missing frequency f.

A student noted the number of cars passing through a spot on a road for 100 periods each of 3 min and summarised it in the table given below:

 Find the mode of the data.

The following table gives the distribution of the life time of 400 neon lamps :

Find the median lifetime of a lamp. 

Following is the cumulative frequency distribution (of less than type) of 1000 persons each of age 20 yr and above. Determine the mean age.

If the median of the following frequency distribution is 46, then find the missing frequencies.

The following distribution gives the daily income of 50 workers of a factory:

Convert the distribution above to a 'less than type' cumulative frequency distribution and draw its ogive. 

On annual day of a school, 400 students participated in the function. Frequency distribution showing their ages is as shown in the following table:

Find mean and median of the above data

Find the mode of the following frequency distribution: