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Calculators

Probability of At Least One Calculator

The calculator below gives the probability that there is at least one success when an event is repeated 'n' times. Let 'n' denote the number of Bernoulli trials and let 'p' denote the probability...

RMSE Calculator

The RMSE calculator calculates the root mean square error for the observed versus predicted values in our statistical model. The RMSE measures the degree of difference between the observed and predicted values of our...

Area Between Two Z-Scores Calculator

The calculator below calculates the area between two Z scores in the standard normal distribution. For example, if you input the values 'a' and 'b' in the calculator below, it gives the area between...

Area To The Left of Z-Score Calculator

The calculator below calculates the area to the left of the Z score in the standard normal distribution. This area corresponds to the cumulative probability for the value of the Z score. This means...

MSE Calculator

The MSE Calculator allows us to calculate the mean square error (MSE) for our regression model. The Mean Square Error (MSE) allows us to decide whether the regression model is a good fit for...

Pooled Standard Deviation Calculator

The pooled standard deviation refers to the combined standard deviation of two different groups of data values. Suppose that we have two data values of sizes n_1 and n_2 respectively. If the standard deviations...

Sturges’ Rule Calculator

Suppose that we are given a large number of raw data values. The data values need to be divided into class intervals in order to present them in the form of a frequency distribution...

Hypergeometric Distribution Calculator

The Hypergeometric Distribution Calculator below calculates the probability that a hypergeometric random variable takes a value equal to the given value of x. It also calculates the probabilities of taking value less than x,...

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