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Scripting Guide - SAS

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652 JSL Syntax Reference Appendix A<br />

Probability Functions<br />

t Density(q, df)<br />

Students t Density(q, df)<br />

Description<br />

Returns the value of the density function at quantile x for the Student’s t distribution with degrees of<br />

freedom df.<br />

t Distribution(q, df, )<br />

Students t Distribution(q, df, )<br />

Description<br />

Returns the probability that a Student’s t distributed random variable is less than q. NonCentrality<br />

defaults to 0.<br />

t Quantile(p, df, )<br />

Students t Quantile(p, df, )<br />

Description<br />

Returns the pth quantile from the Student’s t distribution with degrees of freedom df. NonCentrality<br />

defaults to 0.<br />

Tukey HSD P Value(q, n, dfe)<br />

Description<br />

Returns the p-value from Tukey’s HSD multiple comparisons test.<br />

Arguments<br />

q The test statistic.<br />

n The number of groups in the study.<br />

dfe The error degrees of freedom, based on the total study sample.<br />

Tukey HSD Quantile(1-alpha, n, dfe)<br />

Description<br />

Returns the quantile needed in Tukey’s HSD multiple comparisons test.<br />

Arguments<br />

1-alpha The confidence level.<br />

n The number of groups in the study.<br />

dfe The error degrees of freedom, based on the total study sample.<br />

Weibull Density(x, shape, )<br />

Description<br />

Returns the value of the density function at quantile x for the Weibull distribution with the parameters<br />

given.

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