troutegg {faraway}

Survival of trout eggs depending on time and location

Description

Boxes of trout eggs were buried at five different stream locations and retrieved at 4 different times. The number of surviving eggs was recorded. The box was not returned to the stream.

Format

A data frame with 20 observations on the following 4 variables.

survive

the number of surviving eggs

total

the number of eggs in the box

location

the location in the stream with levels 1 2 3 4 5

period

the number of weeks after placement that the box was withdrawn levels 4 7 8 11

Source

Manly B. (1978) Regression models for proportions with extraneous variance. Biometrie-Praximetrie, 18, 1-18.

References

Hinde J. and Demetrio C. (1988) Overdispersion: Models and estimation. Computational Statistics and Data Analysis. 27, 151-170.