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Formula For Finding Z Score. X The value to be standardized. See if you can figure out how to use this formula. σ Standard deviation of the. X is a single raw data value.
In statistics a z-score tells us how many standard deviations away a value is from the mean. Z Score x x σ 80 70 15 0667. So the Z score for a 90 percent brand would be equal to 90 - 738 86 188. This is done by subtracting the value you chose from the population average then dividing that difference by the sigma of your population. Z X μ σ. The Equation for z-score of a data point is calculated by subtracting the population mean from the data point referred to as x and then the result is divided by the population standard deviation.
Z X μ σ.
Z Score x x σ 80 70 15 0667. Z X μ σ. All of the following problems use the z-score formula. μ is the population mean. Where the supplied arguments are as below. Z Score x x σ 80 70 15 0667.