The _____ Method of Winterizing Irrigation Systems Is Used When

question 20

Multiple Choice

The _____ method of winterizing irrigation systems is used when the manual valves are located at the end and low points of the irrigation piping.

• A) blow-out
• B) manual drain
• C) automatic
• D) global

---

Definitions:

Sample Statistics

Statistics calculated from a subset of the population data, used to estimate population parameters.

Margin of Error

An expression of the amount of random sampling error in survey results.

Population Mean

The population mean is the average value of all the items in a population.

Population Proportion

The ratio of members in a group to the total population who have a particular characteristic.