Question: A fundamental distinction between trend projection and linear regression is that: OA. in trend projection the independent variable is time; in linear regression the

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

A fundamental distinction between trend projection and linear regression is that: OA. 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. OB. trend projection uses two smoothing constants, not just one. Oc. trend projection can be a function of several variables, while linear regression can only be a function of one variable. OD. only linear regression can have a negative slope. OE. trend projection uses least squares while linear regression does not.

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