Financial Calculators & Tools

Converts a z test statistic into a p-value for a left-tailed, right-tailed, or two-tailed...

Computes nPr, the number of ordered arrangements when choosing r items from n where order...

Computes n raised to the power r, the number of ordered arrangements of length r when each...

Enter an average rate (lambda) and a number of occurrences (x) to get the Poisson probabil...

Enter a list of values and their matching probabilities to get the mean, variance and stan...

Enter paired X and Y values and this tool returns the coefficient of determination (R squa...

The Regression Calculator fits a least-squares straight line to your paired X and Y value...

Enter paired X and Y values to get the least-squares regression line: its slope (m) and it...

Computes the root mean square of a list of numbers, the square root of the average of thei...

Calculates the minimum sample size needed to estimate a population mean within a chosen ma...

Enter an estimated proportion, a desired margin of error and a confidence level to get the...

The Standard Error Calculator takes one comma-separated list of sample values and returns...

Enter a sample standard deviation and sample size and the tool returns the standard error...

Enter a sample mean, the population mean, the sample standard deviation and sample size to...

Calculate both the population and sample variance of a list of numbers, along with the mea...

Enter a sample mean, population mean, known population standard deviation and sample size...