Read simple statistics guides, worked examples, formulas, and explanations designed to help you understand the concepts behind common calculations.
After performing an F-test for ANOVA, equality of variance test, or a regression model, you obtain an F-test statistic. The next step involves finding an F-critical value to help you…
After computing the F-test statistic for ANOVA, regression, or the F-test for equality of variance, you need to determine whether the results are statistically significant or not. Using the classical…
After calculating the t-test statistic, the next step is finding a t-critical value to help you decide whether or not to reject the null hypothesis. If the absolute t-statistic value…
A T distribution table is a reference table used in statistics to find t critical values for t-tests and confidence intervals that use t statistic. The table is also referred…
The t-critical value is an essential part of statistics and hypothesis testing. It helps you decide whether your results are significant or just due to chance. Without the t-critical value,…
Have you just been introduced to the binomial probability formula and are wondering how you can use it to calculate binomial probability? This article shows you how to apply the…
The mean of the binomial distribution is also known as its expected value. It represents the average number of successes you would expect over many repetitions of a binomial experiment.…
After performing a z-test, the next step is deciding whether to reject the null hypothesis. This decision is based on the z critical value. If the absolute value of your…
A z score is a statistical measure that shows how many standard deviations a value is from the mean of a dataset. Simply stated, a z score tells you whether…
Calculating a z-score is always straightforward. You only need to apply the formula, z =(x−μ)/σ. However, finding probability with a z-score is quite challenging for many students. There are many…