Use this Hypothesis Test Calculator for quick results in Python and R. Learn the step-by-step hypothesis test process and why hypothesis testing is important.

June 23, 2025 - Hypothesis testing calculator is here to help you quickly check your hypothesis and get p-values and critical values in seconds.

June 12, 2025 - If you need help choosing which t-test to use or selecting the options in the t-test calculator, you’ll find additional information below the calculator. The default options are good for most cases. See all my Statistical Calculators! ... Add Row Clear Significance level: 0.01 0.05 0.10 One or Two-Tailed Option: Two-tailed Left-tailed (<) Right-tailed (>) Perform Hypothesis Test (Optional) Null Hypothesis Mean: Analyze Print

Use this hypothesis testing calculator to determine whether to reject or fail to reject H₀. It instantly finds test statistics & critical value with detailed steps.

In the hypothesis test calculator you can calculate e.g. a t-test, a chi-square test, a binomial test or an analysis of variance.

Or use calculator: invNorm or invT. Label on your picture and shade the region. ■Lastly: Label where the test statistic value falls on the picture. ... If p is “low,” H0 must go! ■The probabilities being small (p-value< α ) show the sample data is unlikely to occur by chance alone; ...

This simple t-test calculator, provides full details of the t-test calculation, including sample mean, sum of squares and standard deviation. ... A t-test is used when you're looking at a numerical variable - for example, height - and then comparing the averages of two separate populations or groups (e.g., males and females). ... H0: u1 - u2 = 0, where u1 is the mean of first population and u2 the mean of the second. As above, the null hypothesis tends to be that there is no difference between the means of the two populations; or, more formally, that the difference is zero (so, for example, that there is no difference between the average heights of two populations of males and females).

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A simple calculator that generates a P Value from a z score.

Performs unpaired t test, Weldh's t test (doesn't assume equal variances) and paired t test. Calculates exact P value and 95% confidence interval. Clear results with links to extensive explanations.

False Discovery Rate Calculator · AB-testing tech note determining sample-size A clear picture of power and significance in AB-tests/ Power analysis in R

September 24, 2025 - The Test for one mean can be used to test the hypothesis that a sample mean is equal to a given mean (with unknown standard deviation) or certified value. The observed sample mean, standard deviation and sample size (n). Test mean is equal to: enter the value to compare the mean to. This procedure calculates ...

The easy-to-use hypothesis testing calculator gives you step-by-step solutions to the test statistic, p-value, critical value and more.

Example 4: For x1 = 14, n1 = 40, x2 = 17, and n2 = 50 test the claim that p1 > p2, that is H0: p1 = p2, H1: p1 > p2, with α = 0.1. Solution: We choose [6:2–PropZTest...]. Enter the information as shown in screen 10 below, highlight [Calculate] and press ENTER ... The p-value is 0.4605 > α so we Fail to Reject H0. Hypothesis ...

Right - the alternative hypothesis states that the population's mean is bigger than the expected mean. Significance level (α): A p-value less than the significance level is statistically significant. Researchers usually use 0.05, but if the price of a mistake is big, they may use a smaller value like 0.01. Outliers: extreme values. relevant only if you entered raw data. included - the calculator ...

Below you can learn how to find P values for the most common statistical tests. Sign up for more information on how to perform hypothesis testing and other common statistical analyses.

December 24, 2023 - The student enters the sample size, number of successes, hypothesized proportion, and the tail type. The calculator then computes the test statistic and p-value.

December 24, 2023 - hypothesis test for a population mean given statistics calculator · Select if the population standard deviation, \(\sigma\), is known or unknown. Then fill in the standard deviation, the sample mean, \(\bar{x}\), the sample size, \(n\), the hypothesized population mean \(\mu_0\), and indicate if the test is left tailed, <, right tailed, >, or two tailed, \(\neq\).

Statistical tests, charts, probabilities and clear results. Automatically checks assumptions, interprets results and outputs graphs, histograms and other charts. The statistics online calculators support not only the test statistic and the p-value but more results like effect size, test power, and the normality level.

Non-significant results indicate insufficient evidence to reject the null hypothesis, meaning the observed difference could be due to random variations. For the most efficient process, use tools for calculation such as: Calculator: Utilize the A/B testing calculator at the top of the page for quick and accurate results.