Department

GeographyCourse Code

GGR270H1Professor

Damian DupuyStudy Guide

FinalThis

**preview**shows half of the first page. to view the full**3 pages of the document.**GGR 270 – Lecture 9 – November 10, 2010

Hypothesis Testing

To determine the level of precision of estimates, a confidence interval is

placed around the sample

This is one form of ‘inference’

A properly created sample is essential for the successful application of

inferential statistics

Often, geographers want to know if a particular sample is representative of

the population

Issue here may be to show that the sample differs significantly from the

population

Hypothesis Testing – classic approach

Process that is generally followed for hypothesis testing

oState null and alternate hypothesis

oSelect appropriate statistical test

oSelect level of significance

oDelineate regions of rejection and non-rejection of the null hypothesis

oCalculate test statistic

oCompare test statistic to theoretical value

Hypotheses

2 complementary hypotheses of interest:

NULL hypothesis (H0)

ALTERNATE hypothesis (Ha)

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