z-Score Calculator

Inputs

Solution

Percentile/Probability:

value

%

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### Description:

This calculator determines the area under the standard normal curve given z-Score values. The area represents probability and percentile values. The calculator allows area look up with out the use of tables or charts. In addition it provide a graph of the curve with shaded and filled area.

The z-score is the number of standard deviations from the mean.

The standard normal distribution is a normal distribution with a standard deviation on 1 and a mean of 0.

### Instructions:

- Select area type.
- Adjust z-Score by using the steppers or manually entering the values.
- Note, the solutions will automatically be updated when either of the input date fields are modified or changed.

### Area Types:

- Left
- Right
- Left Right Equal Area
- Left Right Different Area
- Middle Equal Area
- Middle Different Area

### Flash/Flex version:

This calculator has been updated to use Javascript. This allows the app to be used on smart mobile phones and tablets. The older Flash/Flex version is available via the link below.

z-Score Calculator (Old Version)

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