Where to Get Data? Run an Experiment Use Existing Data

Existing Dataset What determines height? Not able to get data for all our variables! Gender has the biggest effect Parent’s Height also influence a Child’s Height GeneticsNutritionGender Heels Child’s Height Parent’s Height

“Non-Experimental” Study Non-Experimental – Variables can’t design ahead of time – Observe and Interpret Experimental Can Better Establish “Cause and Effect” – Can Control Predictors Barriers – Logistics – Cost – Ethics / Laws People Unethical?

Experimental Design: Medicine “Controlled Experiment”

Experimental Design: Web Design

Experimental Design: Product Marketing

Types of Research

Spurious Correlation

Types of Research

Statistical and Analytic ToolBox Standard Deviation Mean, Median, Mode Histogram Normal Distribution Binomial Distribution Probability Boxplot Correlation Regression Z-test for Proportions Chi-Square

Breadth vs. Depth vs. Relevancy CLASS PROJECT Statistics DataViz Computer Science CLASS