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3. Test Statistic
A test statistic is a numerical quantity computed from the data of a sample and is used in reaching a decision on whether or not to reject the null hypothesis.
The numerical quantity computed from the data of a sample and used in reaching a decision on whether or not to reject the null hypothesis is called; 3.Test statistic.
- When we are dealing with hypothesis testing, it is pertinent to note that we have terms like sample size, sample mean, population size, population mean, test statistic, significance level, critical value, standard deviation e.t.c.
- Now, among all those terminologies, the one that we always calculate first after defining the hypothesis is the test statistic.
- The test statistic is the one that is computed from which we will get the p-value to know whether to reject the null hypothesis or not.
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