8 professional tools — enter data in spreadsheet tables · regression with scatter plots, standard errors & t-stats · elasticity · log transforms · growth rates · distribution analysis.
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How responsive is quantity demanded to a change in the good's own price? Uses the midpoint method.
How responsive is quantity demanded to a change in consumer income? Classifies goods as luxury, normal, or inferior.
How does quantity demanded of Good A respond to a price change in Good B? Identifies substitutes (+) and complements (−).
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