# Difference between revisions of "ZMeanTest Command"

From GeoGebra Manual

m (typo: Ztest->ZMeanTest) |
m (upper case Z (test)) |
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;ZMeanTest[ <Sample Mean>, <Population Standard Deviation σ>, <Sample Size>, <Hypothesized Mean>, <Tail> ] | ;ZMeanTest[ <Sample Mean>, <Population Standard Deviation σ>, <Sample Size>, <Hypothesized Mean>, <Tail> ] | ||

− | : Performs a one sample | + | : Performs a one sample Z test of a population mean using the given sample statistics and the population standard deviation. ''Hypothesized Mean'' and ''Tail'' are defined as above. Results are returned in list form as {P value, Z test statistic}. |

## Revision as of 09:02, 16 August 2012

This page is about a feature that is supported only in GeoGebra 4.2. |

- ZMeanTest[ <List of Sample Data>, <Population Standard Deviation σ>, <Hypothesized Mean>, <Tail> ]
- Performs a one sample Z test of a population mean using the given list of sample data and the population standard deviation.
*Hypothesized Mean*is the population mean assumed in the null hypothesis.*Tail*has possible values "<", ">" , "≠". These specify the alternative hypothesis as follows.- "<" = population mean <
*Hypothesized Mean* - ">" = population mean >
*Hypothesized Mean* - "≠" = population mean ≠
*Hypothesized Mean*

- "<" = population mean <

- Results are returned in list form as {P value, Z test statistic}.

- ZMeanTest[ <Sample Mean>, <Population Standard Deviation σ>, <Sample Size>, <Hypothesized Mean>, <Tail> ]
- Performs a one sample Z test of a population mean using the given sample statistics and the population standard deviation.
*Hypothesized Mean*and*Tail*are defined as above. Results are returned in list form as {P value, Z test statistic}.