A Fundamental Distinction Between Trend Projection and Linear Regression Is

question 101

Multiple Choice

A fundamental distinction between trend projection and linear regression is that:

• A) trend projection uses least squares while linear regression does not.
• B) only linear regression can have a negative slope.
• C) in trend projection the independent variable is time; in linear regression the independent variable need not be time, but can be any variable with explanatory power.
• D) trend projection can be a function of several variables, while linear regression can only be a function of one variable.
• E) trend projection uses two smoothing constants, not just one.

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Definitions:

Terminal Blocks

Electrical connectors that facilitate the easy connection and organization of wires in a circuit.

Single-phase

Refers to an electrical power system that uses only one alternating current (AC) voltage phase, common in residential and light commercial applications.

Three-phase

A system of three electrical currents or waves that are offset in phase by one-third of their cycle, commonly used in power systems for efficient electricity distribution.

NEMA

The National Electrical Manufacturers Association, which sets standards for electrical equipment.