Question

The following table shows the marks scored by 23 students of a class. | Marks | 0 – 10 | 10 – 20 | 20 – 30 | 30 – 40 | 40 – 50 | |-------|--------|---------|---------|---------|----------| | Number of Students | 5 | 3 | 4 | 8 | 3 | The lower limit of the modal class is :

Find 'mean' and 'mode' of the following data :

The following distribution gives the daily income of 50 workers of the factory. The lower limit of the modal class is

The class marks of the median class of the following data is