Question

What are the three method to find mean class 10?

Answer 1

By direct method,step deviation method or by assumed mean method we can find mean of the given data .

Answer 2

1. Direct method
Sum of (fixi)/sum of (fi)
2. Assumed mean method
A+sum of (fidi)/n
3.step deviation method
A+{h×sumof (fiui)/sum of(fi)