Random Variation in a Model

Chi-Square

The chi-square distribution with k degrees of freedom is the same as the gamma distribution with $\alpha = \frac{k}{2}$ and $\lambda = 2$.

Parameter:

k

is an integer $\ge $ 1 which represents the degrees of freedom.

Table B.7 shows how the chi-square distribution parameter names are specified in Simulation Studio (specifically, in the Numeric Source block). The chi-square distribution is not available with the Distribution option in JMP.

Table B.7: Chi-Square Distribution Parameter Names

 

Simulation Studio

JMP

k

degrees of freedom

–


The following examples show (case-sensitive) string values that can be used as Numeric Source block DataStreamDescription factor values or InStreamPolicy port values. In these examples, the distribution and parameter names in the string value are the names that are used in the Theoretical option in the Numeric Source Block Properties dialog box (including any spaces or hyphens). Quotation marks are not required around the string value, and you can specify only the parameters that need to be updated (as demonstrated in the second example).

  • class == Chi-Square;degrees of freedom == 4

  • degrees of freedom == 6