The Number of Cans of Soft Drinks Sold in a Machine

question 57

Essay

The number of cans of soft drinks sold in a machine each week is recorded below. Develop forecasts using a three-period moving average.
338, 219, 278, 265, 314, 323, 299, 259, 287, 302

---

Definitions:

Random Variable

A variable whose numerical values result from a random phenomenon or statistical experiment.

Constant

In mathematics and statistics, a fixed value that does not change within the scope of a given problem.

Interval

A range between two numbers or points, often used to specify a period of time or a statistical range.

Standard Normal Distribution

A specific probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.