In the following table the prices of salt per quintal of secen days of a market in Kolkata are given . Find the arithmetic mean of the table by transferring the origin at 300.

Find the median of the prices of salt per quintal in the market of Kolkata, given in the question number 11 in exercise-1.

The frequency distribution of the number of accidents in 30 consecutive days in a city are given below. Find the arithmetic mean.

The frequency distribution of the diameters (in mm) of 80 pipes are given below. Find their arithmetic mean, assuming 22 as the origin.

The following table shows the ages of the patients admitted in a hospital on a particular day : Find the mode and the mean of the data given below. Compare and interpret the two measures of central tendency.

The frequency distributions of the quantity (in quintals) of producing cokes from a coke mine in 100 days are given below. Find the arithmetic mean.

The following table gives the literacy rate (in percentage) of 35 cities. Find the mean literacy rate.

The marks obtained in mathematics by 30 students of Class X of a certain scholl are given in table the below. Find the mean of the marks obtained by the students.

Two godowns A and B have grain capacity of 100 quintals and 50 quintals respectively. The supply to 3 ration shops, D,E and F whose requireents are 60, 50 and 40 quintals respectively. The cost of transportation per quintal from the godowns to the shops are given in the following table: How should the supplies be transported in order that the transportation cost is minimum? What is the minimum cost?

Find the mean of the following distribution table:

Donations (in rupees) are given for a fare by the 100 students of a school. In the following table rate of donation and the number of students are given. In the above data, the rate of donation of 24 students is unknown , but it is known to us that the average rate of donation is Rs. 1.27 . Find teh unknown frequency.