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Impulsivity
Jenna Cantor
2/23/11
Click to edit Master subtitle style
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INTRODUCTION
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How impulsive a person is compared to their approval of President Obama Impulsivity (or impulsiveness) is a personality trait characterized by the inclination of an in
Sociology 210
Lecture 17: Hypothesis Testing in Bivariate Regression
The Least Squares Solution
The estimates of a and b that give the smallest possible value of e2 (i.e. that minimize the sum of the squared residuals) are:
( X X )(Y Y ) = SP b= SS (X X
2.0 BASIC CONCEPTS
This chapter is concerned with the establishment of basic concepts essential for an understanding of design. In a sense this chapter will provide a language through which later discussions can communicate about design. Included are the
Sociology 210 Summer 2010 Assignment 1 (due July 9 at beginning of lecture) 1. Identify the level of measurement for each of the following variables: (A) Type of residence classified as dorm, off-campus apartment, condominium, or parents home (B) Weight i
Sociology 210 Winter 2010 Assignment 2 (due Wednesday, July 14 at beginning of lecture) 1. The Bureau of Labor Statistics recently released the December 2009 preliminary unemployment rates by state. The unemployment rates for 13 Midwest states are as foll
Sociology 210 Summer 2010 Assignment 4 (due Wednesday, July 28 at beginning of lecture) Please be sure to carry out and show all relevant steps to conduct hypothesis tests for each problem that requires a hypothesis test. 1. A study conducted in 1968 indi
Sociology 210 Summer 2010 Assignment 3 (Due Friday, July 23 at beginning of lecture) 1. (From Frankfort-Nachmias and Leon-Guerrero, 2002) For each of the following situations determine whether a one- or two-tailed hypothesis is appropriate. Also state the
Sociology 210 Summer 2010 Assignment 7 * due Monday, August 16 at 10:10am * 1. Is wine good for your heart? There is some evidence that drinking moderate amounts of wine helps prevent heart attacks. The table below gives data on yearly wine consumption (l
Sociology 210 Summer 2010 Assignment 6 (due Monday, August 9 at beginning of lecture) 1. Radon is a colorless, odorless gas that is commonly found in the ground in Midwestern states such as Michigan and has been linked to health problems after long-term e
222xSociology 210 Summer 2010 Assignment 5 (due Monday, August 2) For all problems using a hypothesis test, be sure to show your work for all 4 steps in hypothesis testing. State in words what the conclusion you reach from the hypothesis test suggests abo
Sociology 210
Lecture 15: Correlation
Correlation
Correlation is a statistical technique used to measure and describe the relationship between two variables measured on an interval-ratio scale. Most common measure of correlation is the Pearson correlatio
Chi Square Test and Analysis of Variance (ANOVA)
Sociology 210
02/23/11
Soc 210 summer 2010
1
Example of Independence
Population Cross-Classification with Statistical Independence (percentages are the same in each column)
Party Identification Ethnic Group
Sociology 210
Lecture 13: Confidence Intervals and Chi-Square Statistic
1 02/23/11 Soc 210 summer 2010
Estimation
Point estimate: a value of a statistic used to estimate an unknown population parameter A confidence interval is a range of values computed
Additional Practice ProblemsNote that the final exam will have fewer problems 1. A sociologist is concerned that the recent spike in foreclosures may lead to an increase in violent crimes. As evidence, he presents 2007 data on foreclosure rate and murder
Sociology 210
Lecture 2: What is Statistics? Core Concepts and Terms
02/23/11
Soc 210 Summer 2010
1
Introduction to Statistical Research
Statistics is a body of methods for collecting and analyzing data Considerations when using statistical methods Desig
Sociology 210
Reliabilty, Validity, and Causality; Frequency Distributions
02/23/11
Soc 210 Summer 2010
1
What is the Unit of Analysis in the following research questions?
Does Urbanization lead to Social Revolution?
A) B) C) D)
02/23/11
Urbanization Rate
Sociology 210
Lecture 4: Variance, Standard Deviation, and Z Scores
02/23/11
Soc 210 Summer 2010
1
The Variance
The sum of squares considers how far the values Xi deviate from the mean The mean of the sum of squares is the variance
N 2 (Xi X ) Sample var
Sociology 210
Lecture 6: Sampling Error and Sampling Distributions
02/23/11
Soc 210 summer 2010
1
Steps for Solving Standardized Normal Distribution Problems
Compute Z-scores for the value(s) of interest (unless problem provides this information). Draw a
Sociology 210
Lecture 7: Standard Error
02/23/11
Soc 210 summer 2010
1
Review: Sampling Distributions
A statistic is any function computed from the data in a sample You can think of any statistic as a variable, because its value will vary from one sample
Sociology 210
Lecture 9: Hypothesis Testing, Part 2
1 02/23/11 Soc 210 summer 2010
Steps in Hypothesis Testing
1. State the Hypotheses
One-tailed test vs. two-tailed test Null hypothesis, Alternative Hypothesis
2. Set the Criteria for a Decision
alpha,
Sociology 210
Lecture 11: The t Test for Two Independent Samples
02/23/11
Soc 210 summer 2010
1
Motivation
Most of the time we are interested in comparing means of two groups rather than comparing the mean of one group to some hypothesized value
This is
Sociology 210
Lecture 12: The t Test for Two Related Samples
02/23/11
SOC 210 summer 2010
1
Related Samples
Two main types of research designs where this method is used 1. Repeated Measures 2. Matched Subjects
02/23/11
SOC 210 summer 2010
2
Repeated-Meas
Sociology 210
Lecture 3:
Measures of Central Tendency and
Variability
1
10/08/11
Soc 210 Summer 2010
Contingency Tables
Shows the Relationship between two
Categorical Variables
In example on next slide, Independent
Variable is on the left and Dependent