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a set of data points has a line of best fit if y= -0.2x + 1.7 what is the residual for the point 5,1

User Nihat
by
7.8k points

2 Answers

3 votes

Answer: 0.3

Explanation:

User Zifot
by
8.4k points
6 votes
we know that
The residual value is the observed value minus the predicted value.
RESIDUAL VALUE=[OBSERVED VALUE-PREDICTED VALUE]
where
Predicted value.--> the predicted value given the current regression equation
Observed value. --> The observed value for the dependent variable.

in this problem
the point (5,1) means that for x=5 the observed value is 1

predicted value for x=5 y=-0.2x+1.7-----> y=-0.2*5+1.7----> y=0.7
predicted value is 0.7
observed value is 1
so
RESIDUAL VALUE=[1-0.7]------> 0.30

the answer is
the residual value is 0.3
User Mnemosyne
by
8.2k points

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