Calculating RMSE

The following data has been loaded in the DataFrame predictions. Either manually, or using the Python console, calculate what the root mean square error (RMSE) of these predictions is.

Predicted	Actual
3	4
2	1
5	3

Possible answers

$$\frac{3}{\sqrt{6}}$$

$$\sqrt{\frac{3}{6}}$$

$$\frac{6}{\sqrt{3}}$$

$$\sqrt{\frac{6}{3}}$$

Exercise

Calculating RMSE

Instructions

Possible answers