In a city, the weekly observations made in a study on the cost of living index are given in the following table:
Draw a frequency polygon for the data above (without constructing a histogram).

For the following data, draw a frequency polygon .

In a city, the following weekly observations were made in a study on cost of living index : Draw a histogram and frequency polygon for the above data on the same graph.

Construct a frequency polygon for the following data:

In a city, the following weekly observations were made in a study of cost of living index for the year 1980-81. Calculate the mean weekly cost of living index by a suitable method.

Consider the marks out of 100, obtained by 51 students of a class in a test, given in table below: Draw a historigram and frequency polygon for the above data.

The daily pocket expenses of 206 students in a school are given below construct a fequency polygon representing the above data.

The ages of 360 patients treated in a hospital on a particular day are given below Draw a histogram and the frequency polygon on the same grap to represent the above data.

Draw a histogram for the frequency distributions of the following data

Draw the cumulative frequency curve for the following given data :

An insurance company selected 2000 drivers at random (i.e., without any preference of one driver over another) in a particular city to find a relationship between age and accidents. The data obtained are given in the following table: Find the probabilities of the following events for a driver chosen at random from the city: having no accidents in one year.