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Calculator to find out the z-score of a normal distribution, convert between z-score and probability, and find the probability between 2 z-scores.
Calculate the standard deviation using the easy-to-type formula (∑(x²) - (∑x)²/n) / n. The divisor is modified to n - 1 for sample data. Calculate the z-score using the formula z = (x - mean) / standard deviation .
The z score calculator can be used to derive a z statistic from a raw score and known or estimated distribution mean and standard deviation. If the variance is known instead, then the standard deviation is simply its square root.
z-score calculator will give the standard score for a data point. Input : Three real numbers as random member, mean and standard deviation of population or sample data; Output : A real number or a variable. z-score Formula:
Explore math with our beautiful, free online graphing calculator. Graph functions, plot points, visualize algebraic equations, add sliders, animate graphs, and more.
5 Νοε 2020 · When you standardize a normal distribution, the mean becomes 0 and the standard deviation becomes 1. This allows you to easily calculate the probability of certain values occurring in your distribution, or to compare data sets with different means and standard deviations.
Interactive, free online graphing calculator from GeoGebra: graph functions, plot data, drag sliders, and much more!
