Instruction 13-3
an Economist Is Interested to See How Consumption

question 234

Multiple Choice

Instruction 13-3
An economist is interested to see how consumption for an economy (in $ billions) is influenced by gross domestic product ($ billions) and aggregate price (consumer price index) .The Microsoft Excel output of this regression is partially reproduced below.
SUMMARY
Regression Statistics
$\begin{array} { l l } \text { Multiple R } & 0.991 \\ \text { R Square } & 0.982 \\ \text { Adj. R Square } & 0.976 \\ \text { Std. Error } & 0.299 \\ \text { Observations } & 10 \end{array}$
ANOVA
$\begin{array} { l l l l l l } & \boldsymbol { d f } & \text { SS } & \text { MS } & \boldsymbol { F } & \text { Signiff } \\ \text { Regression } & 2 & 33.4163 & 16.7082 & 186.325 & 0.0001 \\ \text { Residual } & 7 & 0.6277 & 0.0897 & & \\ \text { Total } & 9 & 34.0440 & & & \\ & & & & & \\ & \text { Coeff } & \text { StaError } & \boldsymbol { t } \text { Stat } & \boldsymbol { P } \text {-Value } & \\ \text { Intercept } & - 1.6335 & 0.5674 & - 0.152 & 0.8837 & \\ \text { GDP } & 0.7654 & 0.0574 & 13.340 & 0.0001 & \\ \text { Price } & - 0.0006 & 0.0028 & - 0.219 & 0.8330 & \end{array}$ Note: Adj.R Square = Adjusted R Square;Std.Error = Standard Error
-Referring to Instruction 13-3,one economy in the sample had an aggregate consumption level of $3 billion,a GDP of $3.5 billion,and an aggregate price level of 125.What is the residual for this data point?

• A)$2.52 billion.
• B)$0.48 billion.
• C)-$2.52 billion.
• D)-$1.33 billion.

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Definitions:

Marginal Product

The growth in production resulting from one more unit of input, while keeping all other inputs the same.

Total Product

The aggregate amount of goods or services generated by a business given a specific amount of resources.

Diminishing Rate

A principle stating that if one factor of production is increased while others are held constant, the incremental gains in output will eventually decrease.

Long Run

Refers to a period in economics where all factors of production can be adjusted, and all costs are variable, allowing for complete industry adjustment.