Standardizing a normal distribution Use the standard normal distribution to find probability Step-by-step example of using the z distribution Other interesting articles Frequently asked questions about the standard normal distribution Standard normal distribution calculator ...
This calculator will tell you the one-tailed (right-tail) area under the standard normal curve, given a Z-score (i.e., the one-tailed probability from the z-score to positive infinity). Please enter the necessary parameter values, and then click 'Calculate'. ...
This calculator will tell you the two-tailed area under the standard normal curve, given a Z-score (i.e., the two-tailed probability from +/- the Z-score to infinity on both tails of the distribution). Please enter the necessary parameter values, and then click 'Calculate'. ...
If you did not have the normal area calculator, you could find the solution using a table of the standard normal distribution (a Z table) as follows: Find a Z score for 8.5 using the formula Z = (8.5 - 5)/1.5811 = 2.21. Find the area below a Z of 2.21 = 0.987. Find a Z ...
Standard Normal Distribution: Z ~ N(0, 1).Calculator function for probability: normalcdf (lower x value of the area, upper x value of the area, mean, standard deviation)Calculator function for the kth percentile: k = invNorm (area to the left of k, mean, standard deviation)...
The standard deviation is equal to 50 days. We enter these values into theNormal Distribution Calculatorand compute the cumulative probability. The answer is: P( X<365) = 0.90319. Hence, there is about a 90% chance that a light bulb will burn out within 365 days. ...
Description F-Graph calculates and plots the standard normal distribution frequency and density functions. One tail, middle, two tail and cumulative density functions (probabilities) can be calculated together with the raw frequency function. You may enter directly Z values referred to N(0,1), or...
For the practising statistician, complex computation without a mechanical calculator was unthinkable in the period 1900-1940. computing, including finding 'areas under the normal curve. Moreover, applets and apps introduce two improvements over printed standard normal area tables. The first is direct ...
Compute probabilities and quantiles for standard statistical distributions, including: normal, Student's t, chi-squared, Fisher's F, binomial, Poisson, geometric, hypergeometric, negative binomial, beta, gamma, Weibull, Mann-Whitney U. What’s New ...
This calculator will compute the cumulative distribution function (CDF) for the standard normal distribution (i.e., the area under the standard normal distribution from negative infinity to x), given the upper limit of integration x. Please enter the necessary parameter values, and then click 'C...