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One Sample t-test Calculator. A one sample t-test is used to test whether or not the mean of a population is equal to some value. To perform a one sample t-test, simply fill in the information below and then click the “Calculate” button.
The one sample t test can be used to look for a difference in only one direction from the standard value (a one-tailed t test) or can be used to look for a difference in either direction from the standard value (a two-tailed t test).
The one-sample t-test calculator provides a p-value with step-by-step calculation, confidence interval, effect size, test power, outliers, distribution chart, and a histogram.
One sample t-test. Choose the one-sample t-test to check if the mean of a population is equal to some pre-set hypothesized value. Examples: The average volume of a drink sold in 0.33 l cans — is it really equal to 330 ml? The average weight of people from a specific city — is it different from the national average? Two-sample t-test
This calculator uses a two-sample t test, which compares two datasets to see if their means are statistically different. That is different from a one sample t test, which compares the mean of your sample to some proposed theoretical value.