An owner needs to describe the amount of gasoline sold per week by his filling station. Past sales records show that a minimum of 3,000 gallons to a maximum of 7,000 gallons are sold per week, with most weeks showing sales of 5,000 gallons.
The first step in selecting a probability distribution is matching the data with a distribution’s conditions. Checking the triangular distribution:
These conditions match those of the triangular distribution.
The triangular distribution has three parameters: Minimum, Likeliest, and Maximum. The conditions outlined in this example contain the values for these parameters: 3,000 (Minimum), 5,000 (Likeliest), and 7,000 (Maximum). You would enter these values as the parameters of the triangular distribution in Crystal Ball.
The following triangular distribution (Figure 107, Triangular Distributionshows the probability of x number of gallons being sold per week.
