[IV 212] adding the class and example notebook to the documentation

Signed-off-by: Nathaniel <NathanielF@users.noreply.github.com>

Author: NathanielF

docs/source/_static/iv_reg.svg

@@ -51,3 +51,12 @@ Regression Discontinuity
    notebooks/rd_skl.ipynb
    notebooks/rd_pymc_drinking.ipynb
    notebooks/rd_skl_drinking.ipynb
+
+
+Instrumental Variables Regression
+========================
+
+.. toctree::
+   :titlesonly:
+
+   notebooks/iv_pymc.ipynb

docs/source/examples.rst

@@ -24,6 +24,9 @@ Some of the definitions have been copied from (or inspired by) various resources
 
 **Interrupted time series (ITS) design:** A quasi-experimental design to estimate a treatment effect where a series of observations are collected before and after a treatment. No control group is present.
 
+**Instrumental Variable Regression (IVR) design** A quasi experimental design to estimate the treatment effect when there is
+a concern that the treatment variable is endogenous in the system of interest.
+
 **Non-equivalent group designs:** A quasi-experimental design where units are assigned to conditions non-randomly, and not according to a running variable (see Regression discontinuity design).
 
 The basic posttest-only design can be described as:

docs/source/glossary.md

@@ -109,6 +109,13 @@ Interrupted time series analysis is appropriate when you have a time series of o
 
 .. image:: _static/interrupted_time_series_pymc.svg
 
+Instrumental Variable Regression
+"""""""""""""""""""""""
+Interrupted time series analysis is appropriate when you have a time series of observations which undergo treatment at a particular point in time. This kind of analysis has no control group and looks for the presence of a change in the outcome measure at or soon after the treatment time.
+
+.. image:: _static/iv_reg.svg
+
+
 Support
 -------