Mean or average is the average of a sequence of numbers. In MATLAB, mean (A) returns the mean of the components of A along the first array dimension whose size doesn’t equal to 1. Suppose that A is a vector, then mean(A) returns the mean of the components. Now, if A is a Matrix form, then mean(A) returns a row vector containing the mean of every column.

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Mean = Example:Mean of sequence x = <1,2,3,4,5> = Sum of numbers/Count of numbers = 15/5 = 3

Different syntax of the mean() method is:M = mean(A)M = mean(A,’all’)M = mean(A,dim)M = mean(A,vecdim)

### M = mean(A)

It returns the mean of sequence A.If A is a vector, then it returns the mean of all elements in the vectorIf A is a matrix, then it returns a vector where each element is the mean of each column in A.Example:
Output: Output : ### M = mean(A, ‘all’)

It returns the mean of all the elements in A either it can be vector or matrix.Example: ### M = mean(A,dim)

It returns the mean of matrix A along each of the given dim.If dim = 1, then it returns a vector where the mean of each column is included.If dim = 2, then it returns a vector where the mean of each row is included.

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Example:
Output : ### M = mean(A,vecdim)

It returns the mean of A based on the specified dimensions vecdim in A.If A is a 2-by-2-by-3 array, then mean(A,<1 2>) calculates the mean of each page of size 2-by-2 as it’s considered as a single entity. So it returns the vector of size 3 as the mean of each page.Example:
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