Last week
Hypothesis testing
One sample group
Alpha and pvalues
Null and Alternative Hypotheses
How to interpret Zscores re: null and
alternative hypotheses
This week
Practice onesample hypothesis testing
Intro to two sample hypothesis testing
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Statistics in Criminal Justice
Central Tendency and
Dispersion
Summarizing Distributions
We summarized distributions using
frequency distributions and graphical
techniques.
Measures of central tendency
Measures of spread / dispersion
Median
Data: 19, 44,
Social Data Analysis
Whats a statistic?
A number that has been systematically obtained
The ability to choose the appropriate stat and to
see whether our estimates are correct(as well as
analyze the work of others) is CRUCIAL
Obtaining valid answers to
Week2
http:/www.youtube.com/watch?v=olEbwhWDYwM
Measurement,VariablesandUnitsofAnalysis
Last week:
Data, Variables
Levels of Measurement
Categorical
Nominal
Ordinal
Continuous
Interval
Ratio
Independent
and Dependent Variables
Up Next: Displaying Stat
Outline
Last week
Hypothesis testing
Comparing a single sample to a population
This week
Twosample hypothesis testing
Large samples
Small samples
Practice!
1
Twosample testing
2
Introduction to twoSample
testing:
We will learn 3 types of two sa
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DEPARTMENT OF SOCIOLOGY & CRIMINAL JUSTICE
University of Arkansas
Phone: 4795753205
Web: http:/sociology.uark.edu
SOCI 3303: Social Data Analysis
Spring 2015
Professor Contact Information:
Dr. Mindy Bradley
Office: 219 Old Main
Email: [email protected]