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Z Score (Z Table) Calculator

價格:免費

更新日期:2016-11-01

檔案大小:3.7M

目前版本:0.05

版本需求:Android 4.0.3 以上版本

官方網站:mailto:hermosa.apps@gmail.com

Email:https://docs.google.com/document/d/e/2PACX-1vSqsBkR469jgEwSWEWj6MDteRvvjTS8rTM1p2xSo8YWxC_IHt6SdkIN9u2GvVrMD8-zyJiy-btaZLUw/pub

Z Score (Z Table) Calculator(圖1)-速報App

Z Table Score Calculator allows you to quickly calculate z-scores.

Z Score (Z Table) Calculator(圖2)-速報App

Background: In statistics, the z score (also called a z-value, standard score, or normal score) is the signed number of standard deviations by which an observation or data is above the mean. A positive z score indicates a datum above the mean, while a negative z score indicates a datum below the mean. It is a dimensionless quantity obtained by subtracting the population mean from an individual raw score and then dividing the difference by the population standard deviation. This conversion process is called standardizing or normalizing.

Z Score (Z Table) Calculator(圖3)-速報App

The z-score is only defined if one knows the population parameters; if one only has a sample set, then the analogous computation with sample mean and sample standard deviation yields the Student's t-statistic.

Z Score (Z Table) Calculator(圖4)-速報App