Regression. Jennifer Kensler. Laboratory for Interdisciplinary Statistical Analysis. LISA helps VT researchers benefit from the use of Statistics. Experimental Design • Data Analysis • Interpreting Results Grant Proposals • Software (R, SAS, JMP, SPSS...). Walk-In Consulting
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LISA helps VT researchers benefit from the use ofStatistics
Experimental Design • Data Analysis • Interpreting ResultsGrant Proposals • Software (R, SAS, JMP, SPSS...)
Monday—Friday 12-2PM for questions requiring <30 mins
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Sullivan (pg. 193)
where and are the sample means of the x and y variables respectively, and and are the sample standard deviations of the x and y variables respectively.
Can we describe the
the two variables
with a linear equation?
where is the response of the ith observation
is the y-intercept
is the slope
is the value of the predictor variable for the ith observation
is the random error
where is the predicted value of the response for a given value of x
The F-test tests whether there is a linear relationship between the two variables.
Y, Response: Muscle Mass
X, Factor: Age
next to Linear Fit and
select Plot Residuals.
then added to the JMP
where are parameters
are known constants
The ANOVA F-test tests
Tests can also be performed for individual parameters.
Then click Run.
Y, Columns: Residual Y
X, Factor: X1, X2, X4
where is the size of bank i
Y: Score Change
Response Score Change Estimates Show Prediction Expression