Question

To calculate mean of a grouped data, Rahul used assumed mean method. He used d = (x - A), where A is assumed mean. Then x̄ is equal to

The following frequency distribution gives the monthly consumption of electricity of 68 consumers of a locality. Find the monthly mean consumption from the data.

Find the mode of the following data:

Find the mode of the following frequency distribution : | Class | 0 – 20 | 20 – 40 | 40 – 60 | 60 – 80 | 80 – 100 | |-------|--------|---------|---------|---------|----------| | Frequency | 8 | 7 | 12 | 5 | 3 |