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.

Nov 4, 2025 · Z-score calculator computes a standardized z-score for any raw data point x. Enter population mean and standard deviation for a given normal distribution.

When you have multiple samples and want to describe the standard deviation of those sample means (the standard error), you would use this z score formula: z = (x – μ) / (σ / √n)

The formula for finding z-scores is the following: X represents the data point of interest. Mu and sigma represent the mean and standard deviation for the population from which you drew your …

Jul 12, 2025 · The Z-score indicates how many standard deviations an element is from the mean. Z-Score Formula To calculate the z- score for any given data we need the value of the …

To calculate the z-score, use the formula z= (x-μ)/σ, where x is the raw score, μ is the mean and σ is the standard deviation. In words, subtract the mean from the raw score and then divide by …

Oct 28, 2025 · Calculate z-scores, convert between z-scores and percentiles, and interpret standard scores with our comprehensive statistical calculator. What is a Z-Score? 📊 What is a Z …