In statistics, this is the symbol for the "Variance"
μ is the symbol for the population mean in statistics. fyi and related but not necessary for the above answer: the sample mean is , enunciated by saying "x" bar. hope this helped. Citation : http://en.wikipedia.org/wiki/Arithmetic_mean
It means the sum total.
Since this is regarding statistics I assume you mean lower case sigma (σ) which, in statistics, is the symbol used for standard deviation, and σ2 is known as the variance.
What is the difference between statistics and parameter
In statistics, this is the symbol for the "Variance"
MDS
μ is the symbol for the population mean in statistics. fyi and related but not necessary for the above answer: the sample mean is , enunciated by saying "x" bar. hope this helped. Citation : http://en.wikipedia.org/wiki/Arithmetic_mean
It means the sum total.
Since this is regarding statistics I assume you mean lower case sigma (σ) which, in statistics, is the symbol used for standard deviation, and σ2 is known as the variance.
it means the common symbols and expression used in mathematics,geometry and statistics.
In chemcistry it means the 'Difference'
What is the difference between statistics and parameter
HRs
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It is r.
_ X is the Mean (not mode.. mode is the most common, mean is the sum of all numbers divided by the number of numbers there are in the data set) : I dont think there is a symbol for mode, ill ask my teacher tomorrow morning ;)