Answer:
The actual relative abundance will be "7.59".
Explanation:
- The residual on something like a curve anywhere at a point becomes expressed as the maximum at either the position between some of the real y-value as well as the expected y-value.
- Consequently, the difference regarding true relative abundance as well as expected relative abundance seems to be 1.25 whether we presume that the x-variable represents rainfall, as well as they-variable, represents the relative abundance of locusts.
The predicted relative abundance for 3 inches rainfall will be:
=
![6.7 - (0.12* 3)](https://img.qammunity.org/2021/formulas/mathematics/college/lk1fsa6swkkue6991vtq1cce2jmfg68721.png)
=
![6.34](https://img.qammunity.org/2021/formulas/mathematics/college/7w9n4xrp9br33d2vun07irmy3w40mbluxf.png)
The residual will be:
=
![actual - predicted \ relative \ abundance](https://img.qammunity.org/2021/formulas/mathematics/college/v9x5gxvoz5w7oz79jsqtvyb298zidao9in.png)
=
![1.25](https://img.qammunity.org/2021/formulas/mathematics/middle-school/nd9z2ne0ymjfanytle4ujs1l4dw9nqn3ta.png)
Now,
The actual relative abundance will be:
=
![1.25 + predicted \ relative \ abundance](https://img.qammunity.org/2021/formulas/mathematics/college/56elzbdey4jpexh0dqc4velb216amkwrwp.png)
=
![1.25 + 6.34](https://img.qammunity.org/2021/formulas/mathematics/college/nu2jyjrt5zk41d38jr1mmg0qxhk6811epe.png)
=
![7.59](https://img.qammunity.org/2021/formulas/mathematics/college/gzjol72mxdkn7rcoyp4ndztvgsnwo01j5r.png)
Remember that perhaps the residual positive value means that even the calculation underestimates the relative abundance. The real relative abundance, however, is 7.59.