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This Z-test calculator is a tool that helps you perform a one-sample Z-test on the population's mean. Two forms of this test - a two-tailed Z-test and a one-tailed Z-tests - exist, and can be used depending on your needs.
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Calculate Z-scores, Z-tests and Z-critical values for one-sample and two-sample scenarios. Enter the sample mean, size, population mean and standard deviation, and the alternative hypothesis, and get the results and diagrams.
Calculate z-scores and probabilities for normal distributions using this online tool. Find z-scores for raw scores, mean and standard deviation, or z-scores between two values.
The Z test checks if the expected mean is statistically significant, based on a sample average and a known standard deviation. The tool also compares the sample data to the standard deviation, calculates the test power, checks data for normality and draws a histogram and a distribution chart.
z-test calculator. Have a question about using Wolfram|Alpha? Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. For math, science, nutrition, history, geography, engineering, mathematics, linguistics, sports, finance, music….
Z-test Calculator Sample Mean: Population Standard Deviation: Sample Size: Population Mean: Alternative Hypothesis:. Level of Significance (α): Tail Type:. Calculate ...
Czytaj dalej, aby dowiedzieć się więcej o teście Z w statystyce, a w szczególności o tym, kiedy używać testu Z, jaki jest wzór na jego statystykę testową i jak ma się test Z do testu T studenta. Jako bonus podajemy kilka przykładów krok po kroku, jak wykonać test Z!
