Divide. round to the nearest tenth.

104÷5.1

20,4

Step-by-step explanation:

First, we take from 1040, only 104 and look up for a number that multiply by 51 gives less or equal 102, so:

, this 2 goes to the answer

and 104 - 102 = 2

And now we use the last zero from 1040, and now we have a 20, but that number is less than 51, so we add another zero to have a 200, and we have to add another zero to the 2 of the answer

So, our answer until now is 20

Now, we add a coma to the answer (20,) and with the 200, we look up for a number that multiply by 51 gives less or equal 200, so:

And the answer until now is 20,3

and 200-153 = 47

We are in the same case, so we add a zero to get 470 and we look up for a number that multiply by 51 gives less or equal 470, so:

So the answer so far is 20,39

51% of the variation in Y is not explained by the regression line.

Step-by-step explanation:

To find the amount of variation not explained by the regression equation (how you found the correlation coefficient), we need to find R. We already have r ...

So to find R from r ( the correlation coefficient ) we just square it.

r² = .7² = .49

Then we just subtract that number from 1 to get the amount of variation that is not explained - which is ... .49 - 1 = .51 (convert to percent) = 51%