Introduction: What is statistics?
o The science of analyzing data.
What is Data?
o Information about an individual (entity that you are studying)
o e.g. of individual: People, places, countries, firms
Variable: a characteristics of an individua
1/13/2015 Notes (Ask teacher about the text book)
Review of last class:
What is statistics?
Talked about the different kinds of variables (Quan vs Qual)
How to present the data in graphs
Displaying Qualitative Information on Graphs:
Bar Graphs vs. Pie Gr
The mean or arithmetic average
o To calculate, the average, r mean, add all values, then divide by the number of
individuals. It is the center of the mass
The median is the midpoint of a distribution- the number such that half
Statistics, Data, and Statistical Thinking
Methods for Describing Sets of Data
Random Variables and Probability Distributions