The acronym is PEMDAS. It stands for
Parentheses
Exponents
Multiplication
Division
Addition and
Subtraction.
This is the order in which basic arithmetical operations must be carried out.
In the UK it is more commonly known as BIDMAS with
B = Brackets and I = Index
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No, but sometimes "average" means "mean" - when it doesn't mean median, geometric mean, or something else entirely.
The answer will depend on who you mean by HE.The answer will depend on who you mean by HE.The answer will depend on who you mean by HE.The answer will depend on who you mean by HE.
See mean-8. Or get a dictionary.
There is no statistical term such as "deviation mean".
No, the geometric mean is not the same as the mean of two numbers.