write the formula to find the mean of grouped data , using assumed mean method and explain each term
Answers
Answer:
statistics the assumed mean is a method for calculating the arithmetic mean and standard deviation of a data set. It simplifies calculating accurate values by hand. Its interest today is chiefly historical but it can be used to quickly estimate these statistics.
Step-by-step explanation:
It is a aummed mean method
The formula to find the mean of grouped data, using the assumed mean method:
• The shortcut approach for calculating the arithmetic mean of grouped data is
x =A+ summation of fd/summation of f
where,
A = Assumed data mean
f= The sum of the frequencies in the grouped data.
fd= The sum of a particular mean's frequencies and deviations. data
d is the standard deviation of a data set's mean.
x = arithmetic mean
• The assumed mean approach is used in statistics to determine the mean or arithmetic mean of a set of data.
• This method, rather than a direct method for determining the mean, is preferable when the given data is large.