Z score

[amh]

1. What is Z score?

- A measure the distance between a datapoint and the mean using standard deviation(SD)
- It can positive and negative

2. Value Intrepretation

- Z score with +3 value indicates the datapoint falls three standard deviations above the mean
- Z score with -3 value indicates the datapoint falls three standard deviations below the mean

3. Equation