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.

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)

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.

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 element along …

To calculate z-scores, take the raw measurements, subtract the mean, and divide by the standard deviation. The formula for finding z-scores is the following: X represents the data point of interest. Mu …

You can use this Z-Score Calculator to calculate the standard normal score (z-score) based on the raw score value, the population mean, and the standard deviation of the population.

Oct 28, 2025 · Calculate z-scores, convert between z-scores and percentiles, and interpret standard scores. Free advanced calculator with formulas, examples, and detailed explanations.

Just enter three numbers, and it shows exactly where you rank. This digital tool eliminates the tedious manual calculations that once required statistical tables and complex arithmetic. Modern z-score …

How to calculate z - score? Case 1: If we know the raw score (x), mean (μ) and standard deviation (σ), we calculate the z-score using the following formula. Example: Given x = 72, μ = 65, and σ = 5, the z …

Calculate z-scores effortlessly with our user-friendly tool. Understand your data distribution and make informed decisions easily!