Question: Given the data, (a) Fit a quadratic curve using the equations on page 391. (b) Verify your answers using software. R: summary(lm(y ~ x +

Given the data,

X -2 5.0 -1 2.3 0 -.1 1 .7 2 2.1

(a) Fit a quadratic curve using the equations on page 391.
(b) Verify your answers using software.
R: summary(lm(y ~ x + x2)) where x and y contain the observations and x2 = x*x.

X -2 5.0 -1 2.3 0 -.1 1 .7 2 2.1

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