Unit II Exploring Bivariate Data

The first Major Topic in AP Statistics is Exploring Data. In Unit I we explored Categorical and Quantitative Data (univariate). In this unit we will look at how two quantitative variables relate.

From the AP Statistics Topic list, here is what we will be focusing on in this unit.

I. Exploring Data: Describing patterns and departures from patterns (20%-30%)

D. Exploring bivariate data

1. Analyzing patterns in scatterplots (Chapter 7)
2. Correlation and linearity (Chapter 7)
3. Least-squares regression line (Chapter 8)
4. Residual plots, outliers, and influential points (Chapter 9)
5. Transformations to achieve linearity: logarithmic and power transformations (Chapter 10)

All homework will be through Math XL, assignments have been set up for each unit.  Due dates are set.  

To get you started consider the following...

In February 1986, 16 students at The Ohio State University Participated in an experiment to explore the relationship between Blood Alcohol Level (BAC) and other variables such as amount of alcohol consumed, weight, gender and age. 16 students participated in the experiment. OSU Police administered a  breathalyzer to verify initial BAC was zero. They were randomly assigned by drawing a ticket from a bowl the number of beers to be consumed (1 to 9) of 12 oz beers. Thirty minutes after consuming their final beer, students took another BAC.  

How might you analyze this data?  Is there a relationship between any of the variables?  Don't forget make a picture, make a picture, make a picture.


What about this data?