Question 02.In calculating the mean of grouped data, grouped in classes of equal width, we may use the formula,¯x=a+∑fidi∑fiwhere, a is the assumed mean, a must be one of the mid - point of classes. Is the last statement correct ? Justify your answer.

Question 02.In calculating the mean of grouped data, grouped in classe

1.	Question 02.In calculating the mean of grouped data, grouped in classes of equal width, we may use the formula,¯x=a+∑fidi∑fiwhere, a is the assumed mean, a must be one of the mid - point of classes. Is the last statement correct ? Justify your answer.
Answer» Question 02. In calculating the mean of grouped data, grouped in classes of equal width, we may use the formula, $¯ x = a + \frac{\sum f_{i} d_{i}}{\sum f_{i}}$ where, a is the assumed mean, a must be one of the mid - point of classes. Is the last statement correct ? Justify your answer.

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Question 02.In calculating the mean of grouped data, grouped in classes of equal width, we may use the formula,¯x=a+∑fidi∑fiwhere, a is the assumed mean, a must be one of the mid - point of classes. Is the last statement correct ? Justify your answer.

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