PROBCHI Function

Returns the probability from a chi-square distribution.

Category: Probability
Returned data type: DOUBLE
Syntax
Arguments
Details
Example

Syntax

PROBCHI(x, df[, nc])

Arguments

x

is a numeric random variable.

Range x ≥ 0
Data type DOUBLE

df

is a numeric degrees of freedom parameter.

Range df > 0
Data type DOUBLE

nc

is an optional numeric noncentrality parameter.

Range nc ≥ 0
Data type DOUBLE

Details

The PROBCHI function returns the probability that an observation from a chi-square distribution, with degrees of freedom df and noncentrality parameter nc, is less than or equal to x. This function accepts a noninteger degrees of freedom parameter df. If the optional parameter nc is not specified or has the value 0, the value returned is from the central chi-square distribution.

Example

The following statement illustrates the PROBCHI function:
Statements
Results 
select probchi(11.264,11);
 
0.5785813293173
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