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Q: What is the symbol for the sample correlation coefficient in statistics?

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The answer is r.Actually 'r' is the usual symbol for the correlation coefficient statistic calculated for a sampleof paired values. The correlation coefficient for a population of pairs of random variables distributed according to a binomial normal distribution is usually denoted by the Greek letter 'rho'.

n

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

In statistics, this is the symbol for the "Variance"

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.

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The Correlation Coefficient computed from the sample data measures the strength and direction of a linear relationship between two variables. The symbol for the sample correlation coefficient is r. The symbol for the population correlation is p (Greek letter rho).

lower case "r"

The answer is r.Actually 'r' is the usual symbol for the correlation coefficient statistic calculated for a sampleof paired values. The correlation coefficient for a population of pairs of random variables distributed according to a binomial normal distribution is usually denoted by the Greek letter 'rho'.

n

3M uses RA as the symbol for the coefficient of retroreflection.

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

In statistics, this is the symbol for the "Variance"

s is the sample standard deviation. it is computed by taking the square root of: sum(x-mean)2/n-1

It is the lower case Greek symbol alpha

A numerical coefficient refers to a symbol or a number that is multiplied with a variable or an unknown quantity in an algebraic term. For example, 48 is the coefficient in the term 48x.

Coefficient

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