Question

write the formulas of mean by direct method,assumed mean method,step deviation method and explain the terms​

Answer 1

Answer:

Step Deviation : Sometimes, during the application of the short-cut method for finding the mean, the deviation d, are divisible by a common number 'h' .In this case the di = xi – A is reduced to a great extent as di becomes di / h.

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Answer 2

Answer:

The formula of the assumed mean method is: Here, a = assumed mean. fi = frequency of ith class. di = xi – a = deviation of ith class

Step-by-step explanation:

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