Question

write formulas for finding mean,median and mode

Answer 1

Mean = ∑X ÷ N

Here,  ∑X= Sum of all the individual values and N= Total number of items

median-
1. Direct Method. Mean=∑X÷N
2.Assume mean method. Mean= A + (∑d÷N)
3. Step derivation method. Mean = A + (∑fd’/∑f)×C

Answer 2

Mean = ∑X ÷ N...,.............