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Suppose data were collected on the number of customers that frequented a grocery stores on randomly selected days before and after the governor of the
Suppose data were collected on the number of customers that frequented a grocery stores on randomly selected days before and after the governor of the state declared a lock down due to COVID 19. A sample of 6 days before the lockdown were chosen as well as 6 days randomly chosen after the lock down was in place. The number of shoppers each day were as follows:
Before lock down | After lock down |
100 | 60 |
110 | 50 |
115 | 70 |
120 | 90 |
145 | 40 |
130 | 50 |
|
|
This is interval/ratio data because they are characteristics of the days.
- Can these results be generalized? To whom?
- Can cause and effect statements be made? Explain.
- Calculate accountable, unaccountable, and total variation. Show your work.
- Eta square is accountable variation divided by total variation. Determine eta square. It is interpreted as the variation in the dependent variable that can be accounted for by the independent variable. Describe eta square in terms of this problem.
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