Normal distribution calculator finds probability, given z-score; and vice versa. Fast, easy, accurate. Online statistical table. Sample problems and solutions.
Enter the mean and standard deviation for the distribution. Enter the chosen values of x1 and, if required, x2 then press Calculate to calculate the probability that a value chosen at random from the distribution is greater than or less than x1 or x2, or lies between x1 and x2. ...
Enter the population mean, the standard deviation of the population and two value $X_1$ and $X_2$ in the box. These values must be real numbers. Press the "CALCULATE" button to make the computation. Normal distribution calculator will give the probabilities of a values which are higher or...
The probability that a score is greater than or equal to the raw score is known as a p-value. Learn more about calculating p-values with our p-value calculator. Key Properties of a Normal DistributionA normal distribution has several key properties: ...
Normal distribution Other distributions:Student's t•Chi-square•F p-value: z-value: mean: std. dev: two tails right tail left tail mean to z 2-sided mean to z Link to calculation:
This distribution calculator determines the Cumulative Distribution Function (CDF), scores, probabilities between two scores, and PDF or PMF for the following distributions: Normal, Binomial, Student's t, F, Chi-Square, Poisson, Weibull, Exponential, and Uniform. ...
This normal distribution calculator (also a bell curve calculator) calculates the area under a bell curve and establishes the probability of a value being higher or lower than any arbitrary value X. You can also use this probability distribution calculator to find the probability that your variable...
As explained above, the standard normal distribution table only provides the probability for values less than a positive z-value (i.e., z-values on the right-hand side of the mean). So how do we calculate the probability below a negative z-value (as illustrated below)?
Standard Normal Distribution Formula Calculator Standard Normal Distribution Formula Standard Normal Distribution is a random variable that is calculated by subtracting the mean of the distribution from the value being standardized and then dividing the difference by the standard deviation of the distribution...
Example: Using the z distribution to find probabilityWe’ve calculated that a SAT score of 1380 has a z score of 1.53. Using the full z table, we find that for a z score of 1.53, the p value is 0.937. This is the probability of SAT scores being 1380 or less (93.7%), and it’...