F(x) = [[x]], what is f(0.9)? f(0.9) = -1 f(0.9) = 0 f(0.9) = 0.9 f(0.9) = 1 f(0.9) = -0.9

I believe the answer you're looking for is f(0.9) = 0.9

If you replace the first x with 0.9, you will be replacing any other x's in the problem with that value as well.

Since f(x) = x

f(0.9) = 0.9

Carlton should use the mean to make an inference about the house values in his neighborhood. On the other hand, a median would only provide one of the data values, and not be influenced by any of the other values. This is due to the fact that all of the house values are spread out.