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Present alternative estimators for causal effects using experimental data when data is available for a single period or for two periods. Discuss their advantages and disadvantages.
Arbitrary Value
A value or figures assigned based on random choice or personal whim, rather than any reason or system.
Upper Limit
The maximum level or point that is considered acceptable or achievable.
Absolute Threshold
The minimum intensity of a stimulus that can be detected by the senses at least 50% of the time.
Difference Threshold
The smallest amount by which a stimulus must be changed in order to produce a noticeable variation in sensory experience.
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