Jay Reynolds
Senior Member.
Woody, you simply can't take a single sample and use that to make a conclusion of causation. You cannot even use a series of tests, however extensive, to do that either.
For example, let me ask you this:
Q: Does this trend line support the claim that "According to data produced by the National Atmospheric Deposition Program(NADP), spraying of magnesium by jet planes equipped with external tanks flying at 30,000 ft has decreased over Lamberton, MN since 1980" ?
For example, let me ask you this:
Q: Does this trend line support the claim that "According to data produced by the National Atmospheric Deposition Program(NADP), spraying of magnesium by jet planes equipped with external tanks flying at 30,000 ft has decreased over Lamberton, MN since 1980" ?