# Class ZTestResult

The result of statistical Z test is stored in this class. If the Z value is closer to 0.0 than ZCriticalValueTwoTail or even ZCriticalValueOneTail, then we can't deduce that D(hypothesized difference) is not good mean value difference. In other case ( ZCriticalValueTwoTail is closer to 0.0 than ZValue), there is a huge probability that hypothesized difference D hadn't been chosen correctly.

##### Inheritance

##### Inherited Members

**Namespace**: Syncfusion.Windows.Chart

**Assembly**: Syncfusion.Chart.Wpf.dll

##### Syntax

`public class ZTestResult`

### Constructors

#### ZTestResult()

Initializes a new instance of the ZTestResult class.

##### Declaration

`public ZTestResult()`

### Properties

#### FirstSeriesMean

Gets first series mean value. Series represents sample from studied population.

##### Declaration

`public double FirstSeriesMean { get; }`

##### Property Value

Type | Description |
---|---|

System.Double | The first series mean. |

#### FirstSeriesVariance

Gets first series variance. Series represents sample from studied population.

##### Declaration

`public double FirstSeriesVariance { get; }`

##### Property Value

Type | Description |
---|---|

System.Double | The first series variance. |

#### ProbabilityZOneTail

Gets the probability that the random variable has values at the tail, assuming that null hypothesis is true.

##### Declaration

`public double ProbabilityZOneTail { get; }`

##### Property Value

Type | Description |
---|---|

System.Double | The probability Z one tail. |

#### ProbabilityZTwoTail

Gets the probability that the random variable has values at the tails, assuming that null hypothesis is true.

##### Declaration

`public double ProbabilityZTwoTail { get; }`

##### Property Value

Type | Description |
---|---|

System.Double | The probability Z two tail. |

#### SecondSeriesMean

Gets second series mean value. Series represents sample from studied population.

##### Declaration

`public double SecondSeriesMean { get; }`

##### Property Value

Type | Description |
---|---|

System.Double | The second series mean. |

#### SecondSeriesVariance

Gets second series variance. Series represents sample from studied population.

##### Declaration

`public double SecondSeriesVariance { get; }`

##### Property Value

Type | Description |
---|---|

System.Double | The second series variance. |

#### ZCriticalValueOneTail

Gets critical value of Z which corresponds to Alpha probability. The area under normal probability density curve of tail is equal to alpha probability.

##### Declaration

`public double ZCriticalValueOneTail { get; }`

##### Property Value

Type | Description |
---|---|

System.Double | The Z critical value one tail. |

#### ZCriticalValueTwoTail

Gets critical value of Z which corresponds to Alpha probability. The area under normal probability density curve of two symmetrical tails is equal to alpha probability.

##### Declaration

`public double ZCriticalValueTwoTail { get; }`

##### Property Value

Type | Description |
---|---|

System.Double | The Z critical value two tail. |

#### ZValue

Gets calculated z value. ( Value of normally distributed random variable with mean=0, and variance=1 ).

##### Declaration

`public double ZValue { get; }`

##### Property Value

Type | Description |
---|---|

System.Double | The Z value. |