Libraries.Compute.Statistics.Tests.CompareGroups

This class implements a one-sample t-test. For more information, see this: https://en.wikipedia.org/wiki/Student%27s_t-test

Example Code

use Libraries.Compute.Statistics.DataFrame
    use Libraries.Compute.Statistics.Tests.CompareTwoColumns

    DataFrame frame
    frame:Load("Data/Data.csv")

    //independent samples t-test
    CompareTwoColumns compare
    compare:SetColumn1("DT")
    compare:SetColumn1("DRT")
  
    //calculate the t-test and output a summary
    frame:Calculate(compare)
    output compare:GetFormalSummary()

This action adds a value to the end of the input.

This action compares two object hash codes and returns an integer. The result is larger if this hash code is larger than the object passed as a parameter, smaller, or equal. In this case, -1 means smaller, 0 means equal, and 1 means larger. This action was changed in Quorum 7 to return an integer, instead of a CompareResult object, because the previous implementation was causing efficiency issues.

Example Code

Object o
        Object t
        integer result = o:Compare(t) //1 (larger), 0 (equal), or -1 (smaller)

This action empty's the list, clearing out all of the items contained within it.

This action determines if two objects are equal based on their hash code values.

Example Code

use Libraries.Language.Object
        use Libraries.Language.Types.Text
        Object o
        Text t
        boolean result = o:Equals(t)

This action gets the item at a given location in an array.

This action gets an iterator for the object and returns that iterator.

This action gets the size of the array.

This returns a critical value, or the place on the distribution where are caluclating our probability values from. The critical value, for a test like a t-test, would be equivalent to a t-value.

Obtains the degrees of freedom calculated by the test.

This action returns a formal academic summary of the result.

This action gets the hash code for an object.

Example Code

Object o
        integer hash = o:GetHashCode()

Returns the mean of the first column.

Returns the mean of the second column.

Returns the variance of the first column.

In Statistics, this is often termed a p-value.

This action returns a formal academic summary of the result.

This action obtains an informal summary of the result.

Returns the variance of the first column.

Returns the variance of the second column.

This action obtains an informal summary of the result.

This action returns a boolean value, true if the container is empty and false if it contains any items.

This action removes the first occurrence of an item that is found in the Addable object.

This action removes an item from an indexed object and returns that item.

Returns the variance of the second column.