Mirex concentration, weight, capture year, and species of Lake Ontario salmon.

Description

Mirex concentration, weight, capture year, and species of Lake Ontario Coho and Chinook salmon.

Format

A data frame with 122 observations on the following 4 variables.

• year: a numeric vector of capture years
• weight: a numeric vector of salmon weights (kg)
• mirex: a numeric vector of mirex concentration in the salmon tissue (mg/kg)
• species: a factor with levels chinook and coho

Details

The year variable should be converted to a factor as shown in the example.

Topic(s)

• Linear models
• Other

Source

From (actual data) Makarewicz, J.C., E.Damaske, T.W. Lewis, and M. Merner. 2003. Trend analysis reveals a recent reduction in mirex concentrations in coho (Oncorhynchus kisutch) and chinook (O. tshawytscha) salmon from Lake Ontario. Environmental Science and Technology, 37:1521-1527.

See Also

Used in fitPlot, residPlot, compSlopes, compIntercepts, hoCoef, and rSquared examples.

Examples

Mirex$year <- factor(Mirex$year)
lm1 <- lm(mirex~weight*year*species,data=Mirex)
anova(lm1)