has_specified_output
achieves_planned_objective
p-value
statistical hypothesis test
statistical hypothesis test objective
Student's t-test
James Malone
Studen't t-test is a data transformation with the objective of a statistical hypothesis test in which the test statistic has a Student's t distribution if the null hypothesis is true. It is applied when the population is assumed to be normally distributed but the sample sizes are small enough that the statistic on which inference is based is not normally distributed because it relies on an uncertain estimate of standard deviation rather than on a precisely known value.
Student's t-test
WEB: http://en.wikipedia.org/wiki/T-test
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