Figure 8: NCSS’ output.
I chose the “Logistic(4)”
from NCSS’ list of “Growth
and Other Models.”
that you manually enter values
for the three smoothing constants. Minitab also has, under
the Time Series choice on the
main menu, a Trend Analysis
option. Choosing that gives the
user four possible curves (linear, quadratic, exponential and
Pearl-Reed logistic). Figure 9
gives the results of my choice
for the “Non-Stop” data, the
Pearl-Reed curve (Minitab calls
it the S-Curve Trend Model).
A NA L Y T I C S
Figure 9: Minitab’s output for the Pearl-Reed logistic growth model for
the Non-Stop data.
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