This lecture course provides an introduction to data analysis and to econometrics. Econometrics is a collection of methods that use data and statistical techniques to extract information from data, to answer real-world applied questions, and to test predictions of economic theory. Econometrics is used by government and business to study the effects of government policies, to use historical data to forecast future values of variables such as the gross domestic product, interest rates, unemployment, stock market prices, or sales growth. This course is the first in a sequence on applied economic statistics, econometrics, and data analysis. The focus is on applications and interpreting the findings of applied econometric studies.