NCERT Exercise 13.2 Q5 - Statistics

Question: For x = 92, 93, 97, 98, 102, 104, 109 with frequencies 3, 2, 3, 2, 6, 3, 3, find mean and variance.

Answer: Use the weighted mean and the computational variance formula.

Full step-by-step NCERT solution with diagrams on Something by Zero.