This is Dataplot data file SNED103.DAT
Snedecor & Cochran Univariate Example:
Reduction in Bee Syrup Concentration After 1/2 Mile Flight
Question: Is there a difference in the 2 groups?
Question: Is there a difference in variability in the 2 groups?
Source--Snedecore, George W. and Cochran , William G. (1937).
Statistical Methods. Sixth Edition.
The Iowa State University Press, Ames, Iowa, page 103.
Number of observations = 10
Number of variables per line image = 2
Order of variables on a line image--
1. Response Variable Y1 = reduction in syrup conc. for 20% group
2. Response Variable Y2 = reduction in syrup conc. for 65% group
To read this into Dataplot--
SKIP 25
READ SNED103.DAT Y1 Y2
Y1 Y2
Syrup Syrup
Reduction Reduction
Group 1 Group 2
---------------------------
0.7 1.7
0.5 2.8
0.4 2.2
0.7 1.4
0.5 1.3
0.4 2.1
0.7 0.8
0.4 3.4
0.2 1.9
0.5 1.4