Introduction to Statistical Methods (Postcalculus) for Social Scientists
ECON 102A

Spring 2014
Econ 102A Section 9
Stephanie Lee ([email protected])
Summary for Confidence Interval and Hypothesis Testing
1. Confidence Interval
= level of significance , 1 = confidence level
a. One population
Introduction to Statistical Methods (Postcalculus) for Social Scientists
ECON 102A

Spring 2014
Econ 102A Section 8
Stephanie Lee ([email protected])
Office Hours: Wednesdays 3:30 5:30 Econ 360 (3rd floor library)
Review
1. Hypothesis Testing
We want to test whether the population average of s
Introduction to Statistical Methods (Postcalculus) for Social Scientists
ECON 102A

Spring 2014
Econ 102A Section 6
Stephanie Lee ([email protected])
Office Hours: Wednesdays 3:30 5:30 Econ 360 (3rd floor library)
Assignment 4 is due on Monday (in lecture)
Review
1. Normal Distribution
a. Stan
Introduction to Statistical Methods (Postcalculus) for Social Scientists
ECON 102A

Spring 2014
Econ 102A Section 3
Stephanie Lee ([email protected])
Office Hours: Wednesdays 3:30 5:30 Econ 360 (3rd floor library)
Review
1. Expected Value
a. Definition: the expected value is a weighted average
Introduction to Statistical Methods (Postcalculus) for Social Scientists
ECON 102A

Spring 2014
Econ 102A Section 7
Stephanie Lee ([email protected])
Office Hours: Wednesdays 3:30 5:30 Econ 360 (3rd floor library)
Assignment 5 is due on Wednesday (in lecture)
Review
1. Central Limit Theorem of
Introduction to Statistical Methods (Postcalculus) for Social Scientists
ECON 102A

Spring 2014
Econ 102A Section 5
Stephanie Lee ([email protected])
Office Hours: Wednesdays 3:30 5:30 Econ 360 (3rd floor library)
Review
1. Covariance
a. Covariance is a measure of how much two random variables
Introduction to Statistical Methods (Postcalculus) for Social Scientists
ECON 102A

Spring 2014
Econ 102A Section 9
Stephanie Lee ([email protected])
Problems
1. (Problem 8.5 from Practice Problems)
Some defendants in criminal proceedings plead guilty and are sentenced without a trial,
whereas
Introduction to Statistical Methods (Postcalculus) for Social Scientists
ECON 102A

Spring 2014
Econ 102A
Statistical Methods for Social Scientists
Page 1 of 7
Assignment 1
1. An insurance company is analyzing the coverage it provides to its customers. Specifically,
each customer carries propert