The data in columns 1 and 2 in the accompanying table are for a private closed economy: a. Use c

The data in columns 1 and 2 in the accompanying table are...

Key Concepts

Multiplier Effect

The multiplier effect refers to the phenomenon where an initial change in autonomous spending leads to a larger change in overall GDP. This occurs because the initial spending increases income, which then leads to further spending as households consume a portion of the additional income. Recognizing the multiplier helps in understanding the amplified impact on equilibrium GDP from changes in investment or other autonomous expenditures.

Consumption Function

The consumption function describes the relationship between disposable income and consumer spending. It generally includes an autonomous consumption component that is independent of income and an induced component that varies with income. Understanding this function is essential for predicting how changes in income will affect overall consumption, which in turn influences equilibrium GDP.

Aggregate Expenditure

Aggregate expenditure represents the total amount of spending on an economy's output of goods and services. In a closed economy context, it is simplified to the sum of consumption and investment. Analyzing aggregate expenditure is crucial because equilibrium GDP is reached when aggregate expenditure equals total output.

Equilibrium GDP

Equilibrium GDP is the level of national income where the total production of goods and services in an economy equals the total planned spending. In a closed economy, this occurs when the aggregate output matches the sum of consumption and investment, meaning businesses produce exactly what is demanded, avoiding unintended inventory stockpiles or shortages.

Transcript

00:01 For problem 9, we are asked to calculate equilibrium gdp using columns 1 and 2.

00:07 So we are given a table representing real domestic output, aggregate expenditures, exports, imports, imports, imports, nets exports, and aggregate expenditures in the open economy.

00:19 So we are asked to find the equilibrium gdp for the closed economy.

00:24 And the equilibrium gdp is 400 because when real domestic outputs is 400, a .e.

00:32 Or aggregate expenditure is also 400 in the closed economy.

00:39 Question b says, now open up this economy to international trade by including the exports and import figures of columns 3 and 4.

00:51 Fill in columns 5 and 6 and determine the equilibrium gdp for the open economy.

00:57 Alright, so now we are asked to incorporate the net exports.

01:02 So imports are always 30 billion and exports are always 20 billion.

01:10 So net exports will always be 20 minus 30, which is negative 10 billion.

01:18 Because remember, net exports are exports minus imports, and that gives you negative 10 billion.

01:26 So incorporating this into our aggregate expenditures, we see that our aggregate expenditure will decrease by minus 10 for each and every point of ae.

01:40 So here i have the ae figures, as you can see.

01:45 So 230, 270, 300 and so on.

01:51 So i just minus 10 from each and every point.

01:56 So 240 minus 10 is 230.

01:59 280 minus 10 is 270 310 minus 320 minus 10 is 310 all right so i basically just subtracted my net exports from my ae and now we are asked to also find the equilibrium gdp in this case and as you can see it will be 350 billion because when real domestic outputs is 350 billion ae is also 350 billion so $350 billion is our equilibrium gdp in the open economy.

02:39 And the second question two, question b says, explain why this equilibrium gdp differs from that of the closed economy.

02:49 Well, it's because the equilibrium of 350 incorporates net exports, whilst that of the closed economy does not incorporate.

03:04 Net exports...

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