ex0921: Ingestion Rates of Deposit Feeders
In Sleuth3: Data Sets from Ramsey and Schafer's "Statistical Sleuth (3rd Ed)"
Description
Usage
Format
Source
References
See Also
Examples
Description
The data are the typical dry weight in mg, the typical ingestion rate (weight
of food intake per day for one animal) in mg/day, and the percentage of the
food that is composed of organic matter for 19 species of deposit feeders. The
goal is to see whether the distribution of species' ingestion rates depends on
the percentage of organic matter in the food, after accounting for the effect
of species weight and to describe the association.
Usage
1
ex0922
Format
A data frame with 19 observations on the following 4 variables.
- Species
a character variable with the name of the species
- Weight
the dry weight of the species, in mg
- Ingestion
ingestion rate in mg per day
- Organic
percentage of organic matter in the food
Source
Ramsey, F.L. and Schafer, D.W. (2013). The Statistical Sleuth: A
Course in Methods of Data Analysis (3rd ed), Cengage Learning.
References
Cammen, L. M. (1980) Ingestion Rate: An Empirical Model for Aquatic Deposit
Feeders and Detritivores, Oecologia 44: 303–310.
See Also
Examples
1
Example output
'data.frame': 19 obs. of 4 variables:
$ Species : chr "Hydrobia neglecta" "Hydrobia ventrosa" "Tubifex tubifex" "Hyalella azteca" ...
$ Weight : num 0.2 0.2 0.27 0.32 0.46 0.9 5.8 8.4 12.4 20.4 ...
$ Ingestion: num 0.57 0.86 0.43 0.43 2.7 0.67 20.2 1.49 4.4 240 ...
$ Organic : num 18 17 29.7 50 14.4 13 6.8 93 88 2.2 ...
Sleuth3 documentation built on May 2, 2019, 6:41 a.m.
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Description Usage Format Source References See Also Examples
Description
The data are the typical dry weight in mg, the typical ingestion rate (weight of food intake per day for one animal) in mg/day, and the percentage of the food that is composed of organic matter for 19 species of deposit feeders. The goal is to see whether the distribution of species' ingestion rates depends on the percentage of organic matter in the food, after accounting for the effect of species weight and to describe the association.
Usage
1 | ex0922
|
Format
A data frame with 19 observations on the following 4 variables.
- Species
a character variable with the name of the species
- Weight
the dry weight of the species, in mg
- Ingestion
ingestion rate in mg per day
- Organic
percentage of organic matter in the food
Source
Ramsey, F.L. and Schafer, D.W. (2013). The Statistical Sleuth: A Course in Methods of Data Analysis (3rd ed), Cengage Learning.
References
Cammen, L. M. (1980) Ingestion Rate: An Empirical Model for Aquatic Deposit Feeders and Detritivores, Oecologia 44: 303–310.
See Also
Examples
1 |
Example output
'data.frame': 19 obs. of 4 variables:
$ Species : chr "Hydrobia neglecta" "Hydrobia ventrosa" "Tubifex tubifex" "Hyalella azteca" ...
$ Weight : num 0.2 0.2 0.27 0.32 0.46 0.9 5.8 8.4 12.4 20.4 ...
$ Ingestion: num 0.57 0.86 0.43 0.43 2.7 0.67 20.2 1.49 4.4 240 ...
$ Organic : num 18 17 29.7 50 14.4 13 6.8 93 88 2.2 ...
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