Question

How should we know that which mean method will be used on which question?class 10 maths chapter 14 statistics.​

Answer 1

Step-by-step explanation:

Step Deviation mean Method: The first step is to choose one among the xi's as the assumed mean, and denote it by 'a'. Second step is to find ui = (xi - a)/h , where a is the assumed mean and h is the class size. Third step is to find fi*ui for all i's & then use the formula.