Statistical Analysis of Data in Science - Week 3

Post date: Sep 21, 2012 11:08:21 PM

Statistical Analysis of Data in Science: Week 3 (9/14 – 9/28)

Session 1

· We’ll discuss the t-test and work through some examples of the t-test. We’ll also discuss the relationship between correlation and cause. Students will analyze some example data to determine if there exists causality in various cases.

· Students will analyze their t-test data and will present their finding using Internal Assessment (IA) criteria to evaluate their Data Collection and processing.

· Analyzing the M&Ms data

· How to use Chi squared to evaluate 2 sets data for a significant difference

· Look at Ib questions for Unit 1

Session 2

· We will discuss the Chi-squared test and will use it to evaluate the color distribution in the two types of M&Ms.

Session 3

· We will perform paper chromatography to analyze the dyes used in the various colors of M&Ms.

· Case Study: Eating PCBs from Lake Ontario. This case is based on an actual news release reporting on research about the effects of eating Lake Ontario fish contaminated with PCBs. It will teach students about statistical analysis and experimental design and examining how the media reports science.

o Objectives:

§ Understand that statistical analysis is simply a tool to aid in the process of conducting research.

§ Evaluate the statistical presentation of research results.

§ Examine how the media reports scientific results.