# Lesson 8: Regression with ARIMA errors, Cross correlation functions, and Relationships between 2 Time Series

**Overview**:

This week we'll start coverage of regression between two time series.

**Learning Objectives**:

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

- Recognize when and how to adjust for residuals with a time series structure
- Estimate the adjusted intercept and slope
- Interpret the cross-correlation function
- Identify and interpret transfer function models