Hypothesis Testing Calculator

Understanding Hypothesis Testing

Hypothesis testing is a crucial procedure in statistics to determine whether there is enough evidence to reject a null hypothesis in favor of an alternative hypothesis. The null hypothesis is a statement of no effect or no difference, while the alternative hypothesis is what we are trying to find evidence for. We calculate a test statistic from sample data and then find the p-value, which is the probability of observing a test statistic as extreme as, or more extreme than, the one calculated, assuming the null hypothesis is true. A small p-value (typically less than the significance level, α) suggests that the observed data is unlikely under the null hypothesis, leading to the rejection of the null hypothesis. This calculator helps you perform these tests by inputting your sample statistic, hypothesized parameter, sample size, standard error, significance level, and choosing the type of test (two-tailed, one-tailed right, or one-tailed left).