Marginal propensity to consume 0.8 â†' multiplier:
The multiplier is 5 when the marginal propensity to consume is 0.8.
The multiplier effect in economics describes the proportional increase in final income that results from an injection of spending. It can be calculated using the formula: multiplier = 1 / (1 - marginal propensity to consume). With a marginal propensity to consume of 0.8, the multiplier equals 5.
A multiplier of 2 would imply a marginal propensity to consume of 0.5, as 1 / (1 - 0.5) equals 2. This value does not align with the given marginal propensity to consume of 0.8, which leads to a higher multiplier.
A multiplier of 4 suggests a marginal propensity to consume of 0.75, calculated as 1 / (1 - 0.75). Again, this does not match the specified marginal propensity to consume of 0.8, which results in a larger multiplier value.
With a marginal propensity to consume of 0.8, the correct calculation yields a multiplier of 5. This is derived from the formula: multiplier = 1 / (1 - 0.8), resulting in a multiplier of 1 / 0.2, which equals 5.
A multiplier of 8 would correspond to a marginal propensity to consume of 0.875, as calculated by the formula 1 / (1 - 0.875). This is inconsistent with the provided marginal propensity to consume of 0.8, indicating a miscalculation.
The multiplier reflects the impact of consumer spending on the economy, and with a marginal propensity to consume of 0.8, it results in a multiplier of 5. Choices A, B, and D do not correctly apply the formula for the given marginal propensity, while choice C accurately represents the relationship between consumption and the multiplier effect. Understanding this concept is crucial for analyzing economic policies and their effects on aggregate demand.
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