Ttest2p: Difference between revisions
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===Purpose=== | ===Purpose=== | ||
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===Synopsis=== | ===Synopsis=== | ||
:result = | :result = ttest2p(x,y,''test'') | ||
===Description=== | ===Description=== | ||
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* '''ttest''' = [-1,{0},1] indicates what ttest is for: | * '''ttest''' = [-1,{0},1] indicates what ttest is for: | ||
:: '''-1''' - lower tail H0: mean(x) <= mean(y) | |||
:: '''0''' - wo-tail H0: mean(x) \~= mean(y) {default} | |||
:: '''1''' - upper tail H0: mean(x) >= mean(y) | |||
====Outputs==== | ====Outputs==== | ||
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===Examples=== | ===Examples=== | ||
result = ttest2p(x,y); | result = ttest2p(x,y); | ||
result = ttest2p(x,y,test); | result = ttest2p(x,y,test); | ||
===See Also=== | ===See Also=== | ||
[[ttest1]], [[ttest2e]], [[ttest2u]] | [[ttest1]], [[ttest2e]], [[ttest2u]] | ||
Latest revision as of 15:01, 22 February 2013
Purpose
Two sample paired t-test.
Synopsis
- result = ttest2p(x,y,test)
Description
Calculates a two sample paired t-test for samples (x) and (y).
Inputs
- x = matrix (column vector) in which the sample data is stored.
- y = matrix (column vector) in which the sample data is stored.
- ttest = [-1,{0},1] indicates what ttest is for:
- -1 - lower tail H0: mean(x) <= mean(y)
- 0 - wo-tail H0: mean(x) \~= mean(y) {default}
- 1 - upper tail H0: mean(x) >= mean(y)
Outputs
The output (result) a structure with the following fields:
- t = test statistic.
- p = probability value
- mean = mean of x - y
- var = variance of x - y
- n = length of x - y
- se = standard error
- df = degress of freedom
- hyp = hypothesis being tested
Examples
result = ttest2p(x,y);
result = ttest2p(x,y,test);