This is Dataplot data file NATR627.DAT
Cubic Polynomial Regression Example
Question: What cubic polynomial relates Y to X?
Source--Natella, Mary G. (1963). Experimental Statistics.
National Bureau of Standards Handbook 91.
U.S. Government Printing Office. Page 6-27 to 6-42.
Number of observations = 7
Number of variables per line image = 2
Order of variables on a line image--
1. Response Variable Y = response
2. Factor 1 X = factor 1
To read this file into Dataplot--
SKIP 25
READ NATR627.DAT Y X
CUBIC FIT Y X
Y X
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3.4 10
11.7 20
37.2 30
80.1 40
151.4 50
253.2 60
392.6 70