Solve example 3 by the assumed mean method .

While calculating the mean of a given data by the assumed-mean method, the following values were obtained: A=25. Sigmaf_1d_1=110,Sigmaf_1=50 Find the mean.

Find the mean by assumed mean method.

Find the mean by assumed mean method.

In the following table , the toll paid by drivers and the number of vehicles is shown . Find the mean of the toll by assumed mean method .

Calculate Arithmetic mean by the "Assumed mean" method

Frequency distribution of daily commission received by 100 salesman is given below: Find mean daily commission received by salesman, by assumed mean method.

Frequency distribution of daily commission received by 100 salemen is given below: Find mean daily commission received by salesmen, by assumed mean method.

The following table shows the funds collected by 50 students for flood affected people. Find the mean of the funds. If the number of scores in two consecutive classes is very low, it is convenient to club them. So, in the above example, we club the classes 0-500 , 500-1000 and 2000-2500 , 2500-3000 . Now the new table is as follows i. Solve by direct method. ii. Verify that the mean claculated by assumed mean method is the same. iii . Find the mean in the above example by taking A=1750 .

In the following table, the toll paid by drivers and the number of vehicles is shown. Find the mean of the toll by 'assumed mean' method.