The table below lists weights (carats) and prices
(dollars) of randomly selected diamonds. Find the (a) explained
variation (b) unexplained variation and (c) indicated prediction
interval. There is sufficient evidence to support a claim of a
linear correlation so it is reasonable to use the regression
equation when making predictions. Find the prediction interval, use
a 95% confidence level with a diamond that weighs 0.8 carats.
Weight 0.3 0.4 0.5 0.5 1.0 0.7
Price $515 $1155 $1346 $1403 $5663 $2278
Explained variation?
Unexplained variation?
Prediction interval?
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