What is 1.652 (six is underlined) what is it rounded by the underlined digit?

The answer is 1.7

To round you look to the number directly to the right of the underlined digit. In this case that number is five and if the number to the right is five or any number bigger than five you round the number up so the six will become a seven

Cthe residual plot for model 1 has a non random pattern and is a good fit for the data

P0000000000p genafhysjq each e yeh wy