Q. Regression analysis was applied to return rates of sparrowhawk colonies. Regression analysis was used to study the relationship between return rate (x: % of birds that return to the colony in a given year) and immigration rate (y: % of new adults that join the colony per year). The following regression equation was obtained) ! = 31.9 – 0.34x Based on the above estimated regression equation, if the return rate were to decrease by 10% the rate of immigration to the colony would________________ (Solved)
1. increase by 34%
2. increase by 3.4%
3. decrease by 0.34%
4. decrease by 3.4%
- b. increase by 3.4%