# Lesson 5: Smoothing and Decomposition Methods and More Practice with ARIMA models

**Overview**:

This week we'll continue with ARIMA models and look at decomposition and smoothing methods.

**Learning Objectives**:

After successfully completing this lesson, you should be able to:

- Identify and interpret additive and multiplicative decompositions
- Decompose a time series
- Apply a lowess smoother
- Apply a moving averages smoother
- Apply a single exponential smoother