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
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
From our website request a meeting for personalized statistical advice
Great advice right now:Meet with LISA before collecting your data
Designed to help graduate students apply statistics in their research
All services are FREE for VT researchers. We assist with research—not class projects or homework.
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