salinity

The 'salinity' data frame has 28 rows and 4 columns.
Biweekly averages of the water salinity and river discharge in
 Pamlico Sound, North Carolina were recorded between the years 1972
 and 1977. The data in this set consists only of those measurements
 in March, April and May.

datasets

Contains the datasets and a few functions for use with
the practicals outlined in Appendix A of the book
Statistical Models (Davison, 2003, Cambridge University Press),
which can be found at <doi:10.1017/CBO9780511815850>.

Alessandra Brazzale

SMPracticals

Practicals for Use with Davison (2003) Statistical Models

salinity function

This data frame contains the following columns:<dl>
 <dt>sal</dt>
<dd>The average salinity of the water over two weeks.</dd> <dt>lag</dt>
<dd>The average salinity of the water lagged two weeks. Since
 only spring is used, the value of 'lag' is not always equal
 to the previous value of 'sal'.</dd> <dt>trend</dt>
<dd>A factor indicating in which of the 6 biweekly periods
 between March and May, the observations were taken. The
 levels of the factor are from 0 to 5 with 0 being the first
 two weeks in March.</dd> <dt>dis</dt>
<dd>The amount of river discharge during the two weeks for which
 'sal' is the average salinity.</dd> 
</dl>

Format

Water Salinity and River Discharge — salinity

This data frame contains the following columns:<dl>
 <dt>sal</dt>
<dd>The average salinity of the water over two weeks.</dd>

 <dt>lag</dt>
<dd>The average salinity of the water lagged two weeks. Since
 only spring is used, the value of 'lag' is not always equal
 to the previous value of 'sal'.</dd>

 <dt>trend</dt>
<dd>A factor indicating in which of the 6 biweekly periods
 between March and May, the observations were taken. The
 levels of the factor are from 0 to 5 with 0 being the first
 two weeks in March.</dd>

 <dt>dis</dt>
<dd>The amount of river discharge during the two weeks for which
 'sal' is the average salinity.</dd>

 
</dl>

salinity: Water Salinity and River Discharge

Description

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Examples