Linear regression by least squares – Rockwell Automation FactoryTalk Historian SE ProcessBook 3.2 User Guide User Manual
Page 168
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FactoryTalk Historian ProcessBook User Guide
150
Tag,
Start Time,
End Time,
Count, < number of points paired>
Mean,
STDEV,
Correlation,
Slope,
Intercept,
Data Type,
Index, Time, Value, Status
Etc.
Linear Regression by Least Squares
The best-fit linear regression line is a straight line that attempts to
summarize the trend of the plotted pairs. This line may be shown on the
XYPlot.
The best-fit line has the formula:
y = mx +b
Where m is the slope and b is the offset. To calculate m, we use the
following equation:
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