Hypothesis Testing: Proportions
Videos
- Against All Odds: Inside Statistics Video 23: Inference
for Proportions. How do federal government statisticians estimate
how many people are unemployed? What size sample can give accurate
results? Discover confidence intervals and tests for single proportion
and for comparing proportions based on paired and independent samples.
(28:51 mins.) Video available in Main Office and from Penn State
AVS.
- Against All Odds: Inside Statistics Video 24: Inference
for Two-Way Tables. A two-way table can show the relationship
between two categorical variables in a single population or compare
the distributions of a single categorical variable in several populations.
The chi-square test for independence/equal distributions in two-way
tables is covered. (28:52 mins.) Video available in Main
Office and from Penn State AVS.
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