Student's t

British  

noun

1. a statistic often used to test the hypothesis that a random sample of normally distributed observations has a given mean, μ; given by t = ( ̄x– μ) √n/s where ̄x is the mean of the sample, s is its standard deviation, and n is the size of the sample

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Etymology

Origin of Student's t

after Student, the pen name of W. S. Gosset (1876–1937), English statistician and research scientist

Example Sentences

To determine the critical value of the Student's t we need the degrees of freedom.

From Textbooks • Nov. 29, 2017

As the sample size increases, the Student's t distribution become more and more like the normal distribution.

From Textbooks • Nov. 29, 2017

This conclusion comes directly from the derivation of the Student's t distribution by Mr. Gosset.

From Textbooks • Nov. 29, 2017

For example, the probability is .10 that a Student’s t random variable with 10 degrees of freedom exceeds 1.372.

From Textbooks • Nov. 29, 2017

The Student's t distribution thus is tied to the normal distribution, but has degrees of freedom that come from those of the Chi squared distribution.

From Textbooks • Nov. 29, 2017