# t-test

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## t-test

any in a class of statistical tests used to find the difference between the means of either a sample and a population, two different sample groups, two matched samples, or the same sample at two different points in time.

## t test

A statistical test used to compare the means of two groups of test data.

## t-test

Student's t-test, see there.

## t-test

(statistics) a test of SIGNIFICANCE that enables the means of two small samples (less than 30) to be compared, in order to assess if they came from the same population or from populations with different means.

## t-test

a test of statistical significance which uses a formula from which a t value is derived. The value is then compared with a set of t-distribution tables to see whether the null hypothesis should be rejected or not.
References in periodicals archive ?
test a group on their statistical knowledge then re-administer the test after a statistics course has been completed, then run a paired t-test comparing the mean of the initial (pre-course) test scores with the mean of the follow-up (post-course) test scores.
Table 3: Two-sample t-test for T1 vs T2 (Volume of Ash Residue)
If the data is normally distributed, the two-sample t-test (for two independent groups) and the paired t-test (for matched samples) are probably the most widely used methods in statistics for the comparison of differences between two samples.
Both an ANOVA (which is short for ANalysis Of VAriance) and a t-test are statistical tests that compare the mean scores for certain groups.
Serum blood parameters such as Na+, K+, Ca2+, albumin, urea, creatinine and cholesterol were checked for the two flocks and unpaired t-test was applied.
KEYWORDS: educational researches, statistical methods, Student's t-test.
The coefficient value is statistically significant on the basis of t-test.
Student t-test was performed to confirm whether the K was equal to one (Mahmood et al.
First, visual acuity scores for the left and right eyes prior to and following treatment, were compared using the paired, twotailed t-test and the Wilcoxon signed rank test, where a p-value of 0.
Because it is probably the most commonly used statistical test, Student's t-test is considered "the bread and butter" of statistical analysis.

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