Cheat Sheet F-Test: Test of population variance Chi^2 Test: t-test: When looking for a population mean given the sample deviation P-test: Proportion test when there are 2 *First, find the rejection region, and then the test statistic Hypothesis Testi
Economics 10: Introduction to Statistical Methods
Class #3 Looking at the Data-Relationships Bivariate Data
Overview
Last
time: summary of univariate data
Univariate data: one data series Description with graphs, statistics
Today:
summary of bivaria
Economics 10: Introduction to Statistical Methods
Class #2 Introduction: Learning from Data
Recap of Last Lecture
Major
uses of statistics:
"Descriptive statistics" more on this today! Prediction/Forecasting Evaluation
How
causality is assessed in t
Econ 10, Winter 2008
Class #1 April 6, 2010
What is statistics?
Statistics
data
is tools for collecting and analyzing
Three broad uses: Descriptive statistics = numerical facts
How fast is GDP growing? How much more do college graduates earn than high sc
Economics 10: Introduction to Statistical Methods
Statistical Inference
Overview of Inference
Methods for drawing conclusions about a population from sample data are called statistical inference Methods Confidence Intervals - estimating a value of a popul
Economics 10: Introduction to Statistical Methods
Lecture #5 Introduction to Probability, Probability Models and Rules
So Far
Summarizing Working
univariate and bivariate data
with samples; want to use samples to learn about the population
This process:
Economics 10: Introduction to Statistical Methods
Normal Distribution Sampling Distribution, Random Samples
Recap: Densities
In
lecture #2 we learned about densities the continuous analog of histograms, e.g.,
Distribution of Reading Scores, End of K Proj
Economics 10
Introduction to Data Analysis
5/28/2008 05:25:00 PM
Median: Middle of the distribution Mean: Average Range: Difference between the highest and the lowest scores *SEE HANDOUT What causes variation in midterm scores? Preparation Beers
Economics 10: Introduction to Statistical Methods
Class #4 More on Bivariate Statistics Data Transformations
Correlation vs. Causation
From
The Elusive Quest for Growth: There are many stories about going astray mistaking correlation for causality. The m