CALCULATING THE MEAN USING STEP DEVIATION METHOD | IN MALAYALAM

THIS METHOD IS AN EXTENSION OF THE SHORT CUT METHOD. WHEN THE FIGURES OF DEVIATIONS APPEAR TO BE LARGE AND ARE DIVISIBLE BY A COMMON FACTOR, STEP DEVIATION METHOD MAY BE APPLIED TO COMPUTE THE MEAN. UNDER THIS METHOD, THE FIGURES OF DEVIATIONS ARE REDUCED BY DIVIDING THEM ALL BY A COMMON FACTOR AND MULTIPLYING THE SUM OF THE PRODUCTS OF THE DEVIATIONS BY THE SAME COMMON FACTOR.

THIS METHOD CAN BE FOUND EASIER ONLY WHEN THE GIVEN FIGURES ARE VERY LARGE ONES. WHEN THE VARIABLES ARE RELATIVELY SMALLER,IT IS ALWAYS BETTER TO USE EITHER DIRECT METHOD OR SHORT CUT METHOD.

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