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Midterm

Two Sample Means Test

4 Pages
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Department
Geography
Course Code
GGR270H1
Professor
Damian Dupuy

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1
Two Sample Means Test
¾ Used when the objective is to compare two samples
¾ You are testing whether there is a significant difference between two samples
¾ If the sample differences are significant, then statistical inference allows the researcher
to conclude that the samples are drawn from different populations.
1. Hypotheses
*HQHUDOIRUP«
H0: No significant difference between the mean of sample 1 and the mean of sample 2.
Therefore, the samples are drawn from the same population.
HA: There is a significant difference between the mean of sample 1 and the mean of
sample 2. Therefore, the samples are drawn from different populations.
2. Critical Value
Use the t distribution,
3. Test Statistic
Use the t test.
Two forms of this test arise:
(a) Variances are equal
(b) Variances are unequal
*HQHUDOIRUP«
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Description
Two Sample Means Test Used when the objective is to compare two samples You are testing whether there is a significant difference between two samples If the sample differences are significant, then statistical inference allows the researcher to conclude that the samples are drawn from different populations. 1. Hypotheses *0307,O1472 H0: No significant difference between the mean of sample 1 and the mean of sample 2. Therefore, the samples are drawn from the same population. HA: There is a significant difference between the mean of sample 1 and the mean of sample 2. Therefore, the samples are drawn from different populations. 2. Critical Value Use the t distribution, 3. Test Statistic Use the t test. Two forms of this test arise: (a) Variances are equal (b) Variances are unequal *0307,O1472 1 www.notesolution.com
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