Match common causal designs to the source of treatment variation in a workplace scenario.
comparison Match each scenario to the causal design family suggested by its source of variation. Randomized experiment Difference-in-differences Regression discontinuity Instrumental variable Synthetic control Eligible customers were randomly assigned to invite-now or invite-later groups A policy launched in two regions while similar regions stayed untreated over the same months Discount approval changed sharply at an account health score of 70 Coach availability changed treatment take-up but should not affect sales except through coaching One city launched a marketplace policy and many other cities can be weighted to match its pre-launch trend A compliance course was assigned by lottery because seats…
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