Fit Linear Models to Scatter Plots
Statistics and Probability · Flashcards
STATISTICS AND PROBABILITY · FLASHCARDS
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QUESTION
Which option describes a good linear fit based on residuals plotted against
x
x
x
?
QUESTION
What is an outlier in a scatter plot when fitting a linear model?
QUESTION
Identify the predicted value for input
x
x
x
using a fitted line
y
^
=
m
x
+
b
\hat{y}=mx+b
y
^
=
m
x
+
b
.
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ANSWER
Substitute
x
x
x
to get
y
^
=
m
x
+
b
\hat{y}=mx+b
y
^
=
m
x
+
b
. Plug in
x
x
x
value to calculate predicted
y
y
y
value.
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