Which of the Following Leads to Large Forecast Errors?
A)larger $\sigma$

question 13

Multiple Choice

Which of the following leads to large forecast errors?

• A)larger sample size,N
• B)variation in the explanatory variable,x,is large
• C)overall uncertainty in the model,as measured by \(\sigma\)²,is smaller
• D)the value of (x₀ - x̄)² is larger

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Definitions:

Principal Key

Another term for primary key, an attribute or set of attributes that uniquely identifies each record in a database table.

Foreign Key

An attribute in a database table that provides a link between data in two tables, typically to enforce referential integrity.

Main Key

A unique identification attribute or field in a database, functionally identical to a primary key.

Row Selector

A tool in spreadsheet and database applications that allows users to select entire rows.