1This is Dataplot data file     NATR627.DAT
2Cubic Polynomial Regression Example
3Question: What cubic polynomial relates Y to X?
4
5Source--Natella, Mary G. (1963). Experimental Statistics.
6        National Bureau of Standards Handbook 91.
7        U.S. Government Printing Office.  Page 6-27 to 6-42.
8
9Number of observations             =  7
10Number of variables per line image =  2
11Order of variables on a line image--
12   1. Response Variable Y = response
13   2. Factor 1          X = factor 1
14
15To read this file into Dataplot--
16   SKIP 25
17   READ NATR627.DAT Y X
18   CUBIC FIT Y X
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20
21
22
23
24   Y     X
25------------
26  3.4   10
27 11.7   20
28 37.2   30
29 80.1   40
30151.4   50
31253.2   60
32392.6   70
33