xxaurorabluexx
04.12.2019 •
Mathematics
Which of the following is the purpose of a confidence interval for the fitted (predicted value) from a
regression model?
a) to estimate the value of a future observation for a given value of x.
b) to estimate the population mean of y for a given value of x
c) to estimate the population slope of the regression model
d) to estimate the sample mean of y for a given value of x.
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Ответ:
option A is correct
Step-by-step explanation:
the prediction interval is to cover a “moving target”, the random future value of y,
while the confidence interval is to cover the “fixed target”,
the average (expected) value of y, E(y).
Ответ: