Discuss the difference between Univariate, Bivariate and Multivariate analysis?

In applied econometrics, data analysis often begins with understanding different levels of analysis: univariate, bivariate, and multivariate. Each level provides distinct insights into the data, helping researchers and policymakers to interpret and make informed decisions based on statistical evidence. 

### Univariate Analysis

Univariate analysis focuses on examining a single variable. It is the simplest form of analysis and is used to describe and summarize the data related to one variable. Key techniques in univariate analysis include calculating measures of central tendency (mean, median, mode) and dispersion (range, variance, standard deviation). These metrics provide a snapshot of the data distribution, allowing researchers to understand the basic characteristics of a ______ _____ ________ __________ _____ _______ ___ ________ __________.
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