t-test-no data

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Seldeeno
Seldeeno il 20 Nov 2015
Risposto: Star Strider il 20 Nov 2015
Hi,
Is there a way in Matlab to perform a t-test using only averages and standard deviations that I read from a file? I dont have the original data.

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Risposte (1)

Star Strider
Star Strider il 20 Nov 2015
You need one more item of data to calculate a t-statistic: the number of observations that went into the calculation of each mean and standard deviation. See Student’s t-test for details. The t-distribution approximates the normal distribution if the number of observations is greater than 30.

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