index.Rmd

--- 
title: "Guidance for Implementing a Statistical Survey"
author: "Garrett Stillings"
date: "`r Sys.Date()`"
site: bookdown::bookdown_site
knit: "bookdown::render_book"

---

# Preface {-}

This document is intended to be an introductory guide to assist EPA partners which are interested in implementing a statistical survey in their monitoring program to assess the condition of an aquatic resource (rivers and streams, lakes, wetlands, coasts). The guide will follow procedures available in the R package [*spsurvey*](https://github.com/USEPA/spsurvey) and R code to implement most stages of a statistical survey process. To assist non-R users, the guide will also offer screenshots of available R shiny applications which do not require coding experience. These applications are housed on an EPA server and can be accessed using an internet browser.

Topics which will be covered in this document include: 

1. __Statistical Survey Design__
2. __Sampling Weights__
3. __Condition Estimates of a Population__
4. __Visualizing Estimates__