The following table shows the relationship between income and consumption in an economy.Income (Y)(in billions of dollars)Consumption (C) (in billions of dollars)051011201730234029503560417047805390 59100 65Assume that investment (I) is $5 billion, government purchases (G) are $4 billion, and net exports (X) are $2 billion.What is the numerical value of the MPC (stated as a decimal)?MPC =
Question
The following table shows the relationship between income and consumption in an economy.Income (Y)(in billions of dollars)Consumption (C) (in billions of dollars)051011201730234029503560417047805390 59100 65Assume that investment (I) is 4 billion, and net exports (X) are $2 billion.What is the numerical value of the MPC (stated as a decimal)?MPC =
Solution
The Marginal Propensity to Consume (MPC) is calculated by the change in consumption divided by the change in income.
Looking at the table, we can take two points to calculate this. For example, let's take the points where income is 36 billion, and where income is 65 billion.
The change in consumption (ΔC) is 36 billion = 100 billion - 50 billion.
So, MPC = ΔC / ΔY = 50 billion = 0.58.
Therefore, the numerical value of the MPC is 0.58.
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