E3.7: Data on Oxygen Demand in Dairy Wastes

In SenSrivastava: Datasets from Sen & Srivastava

Description

The E3.7 data frame has 20 rows and 7 columns.

Usage

data(E3.7)

Format

This data frame contains the following columns:

Day

a numeric vector, day of measurement, all measurements are on the same sample.

x.1

a numeric vector, biological oxygen demand, mg/liter.

x.2

a numeric vector, total Kjeldahl nitrogen, mg/liter.

x.3

a numeric vector, total solids, mg/liter.

x.4

a numeric vector, total volatile solids, a component of x.3, in mg/liter.

x.5

a numeric vector, chemical oxygen demand, mg/liter.

y

a numeric vector, the response, log of oxygen demand, mg oxygen per minute.

Details

This is data from an experiment to construct a model for total oxygen demand in dairy wastes as a dunction of five laboratory measurements. Data were collected on samples kept in suspension in water in a laboratory for 220 days. All observations given here were taken on the same sample over time, so are probably dependent.

Source

Moore (1975) Total Biochemical Oxygen Demand of Animal Manures. Ph. D. thesis, University of Minnesota, Dept. of Agricultural Engineering.

Examples

data(E3.7)
summary(E3.7)

Example output

      Day             x.1              x.2             x.3      
 Min.   :  0.0   Min.   :  79.0   Min.   :147.0   Min.   :2777  
 1st Qu.: 35.0   1st Qu.: 497.5   1st Qu.:183.0   1st Qu.:3904  
 Median : 76.0   Median : 576.5   Median :201.0   Median :4918  
 Mean   : 80.4   Mean   : 633.5   Mean   :219.7   Mean   :5075  
 3rd Qu.:110.8   3rd Qu.: 860.0   3rd Qu.:249.2   3rd Qu.:6014  
 Max.   :220.0   Max.   :1150.0   Max.   :334.0   Max.   :8804  
      x.4             x.5             y          
 Min.   :57.70   Min.   :2599   Min.   :-0.5229  
 1st Qu.:72.50   1st Qu.:4125   1st Qu.:-0.2218  
 Median :78.55   Median :4752   Median :-0.0229  
 Mean   :77.34   Mean   :5171   Mean   : 0.1192  
 3rd Qu.:81.42   3rd Qu.:6000   3rd Qu.: 0.3252  
 Max.   :86.50   Max.   :8905   Max.   : 1.5563  

SenSrivastava documentation built on May 2, 2019, 7:29 a.m.