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# Statistics Tools

• ## Sxy Calculator for Linear Regression

This calculator automatically finds the value for Sxy for a linear regression model based on the x values and y values in…

• ## Sxx Calculator for Linear Regression

In statistics, Sxx represents the sum of squared deviations from the mean value of x. This value is often calculated when fitting…

• ## Two Sample Z-Test Calculator

A two sample z-test is used to test whether or not the means of two populations are equal when the population standard…

• ## One Sample Z-Test Calculator

A one sample z-test is used to test whether or not the mean of a population is equal to some value when…

• ## F-Test for Equal Variances Calculator

An F-test is used to test whether two population variances are equal.. To perform an F-test for two samples, simply enter a…

• ## Tolerance Interval Calculator

A tolerance interval is a range that is likely to contain a specific proportion of a population with a certain level of…

• ## Area To The Right of Z-Score Calculator

This calculator finds the area to the right of a certain z-score in the normal distribution. Simply enter the z-score below and…

• ## Area To The Left of Z-Score Calculator

This calculator finds the area to the left of a certain z-score in the normal distribution. Simply enter the z-score below and…

• ## X-Bar (Sample Mean) Calculator

In statistics, x-bar (x) is a symbol used to represent the sample mean of a dataset. To calculate x-bar for a given…

• ## Trimmed Mean Calculator

A trimmed mean is the mean of a dataset that has been calculated after removing a specific percentage of the smallest and…