Calculate the average marks from the following table :

Find the average mark from the following :

Calculate TR, AR and MR from the following table

Calculate TVC and AVC from the following table :

Calculate TP and MP from the following table :

Find the average income (in rupees) of the workers from the following table :

Identify the different output levels, which mark the three phases of the operation of the law of variable proportions, from the following table :

The following table shows the marks scored by 140 students in an examination of a certain paper: Marks: 0-10 10-20 20-30 30-40 40-50 No. of students: 20 24 40 36 20 Calculate the average marks by using the assumed mean deviation method.

Calculate the value of MPS from the given table: