In Distribution, select the distribution for your graph, and then enter values for the parameters.
Binomial
Complete the following steps to enter the parameters for the
binomial distribution.
 In Number of trials, enter the sample size.
 In Event probability, enter a number between 0 and 1 for the probability that the outcome you are interested in occurs. An occurrence is called an "event".
Chisquare
In Degrees of freedom, enter the degrees of freedom to define the chisquare distribution. For more information, go to chisquare distribution.
Discrete
Complete the following steps to enter the parameters for the discrete distribution.
 In Values in, enter the column that contains the values to include in the distribution. Usually, values are discrete events or counts that are represented by numeric values.
 In Probabilities in, enter the column that contains the probabilities for each value. Probabilities must be between 0 and 1, and must sum to 1.
Exponential
Complete the following steps to enter the parameters for the
exponential distribution.
 In Scale, enter the scale parameter. The scale parameter equals the mean when the threshold parameter equals 0.
 In Threshold, enter the lower bound of the distribution.
F
In Numerator degrees of freedom and Denominator degrees of freedom, enter the numerator and denominator degrees of freedom to define the Fdistribution. For more information, go to Fdistribution.
Geometric
 In Event probability, enter a number between 0 and 1 for the probability that the outcome of interest occurs. An occurrence is called an "event".

From
Model, select one of the following to specify the number to model.
 Total number of trials: The number of trials includes both events and nonevents.
 Only the number of nonevents: Do not include the number of events.
Integer
Complete the following steps to enter the parameters for the
integer distribution.
 In Minimum value, enter the lower end point of the distribution.
 In Maximum value, enter the upper end point of the distribution.
Lognormal
Complete the following steps to enter the parameters for the
lognormal distribution.
 In Location, enter a value that represents the location of the peak of the related normal distribution.
 In Scale, enter a value that represents the spread of the related normal distribution.
 In Threshold, enter the lower bound of the distribution.
Normal
Complete the following steps to enter the parameters for the normal distribution.
 In Mean, enter the value for the center of the distribution.
 In Standard deviation, enter the value for the spread of the distribution.
Poisson
In Mean, enter the average rate of occurrence. For more information, go to Poisson distribution.
t
In Degrees of freedom, enter the degrees of freedom to define the tdistribution. For more information, go to tdistribution.
Uniform
Complete the following steps to enter the parameters for the uniform distribution.
 In Lower endpoint, enter the minimum value for the distribution.
 In Upper endpoint, enter the maximum value for the distribution.
Weibull
Complete the following steps to enter the parameters for the
Weibull distribution.
 In Shape parameter, enter the shape parameter to define the Weibull distribution.
 In Scale parameter, enter the scale parameters to define the Weibull distribution.
 In Threshold parameter, enter the lower bound of the Weibull distribution.