Custom and Past Practice Refer To

question 25

Multiple Choice

Custom and past practice refer to:

• A)Two methods used by arbitrators to interpret cases.
• B)Interpreting cases by using precedent cases and decisions.
• C)Interpreting cases by using the contract or policy manual.
• D)Interpreting cases by considering the minutes or notes collected when the provision at issue was written or negotiated.

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Definitions:

Z-test

A statistical test used to determine if there is a significant difference between sample and population means, assuming the population variance is known.

Chi-squared Test

The Chi-squared test is a statistical method used to determine if there is a significant difference between the expected and observed frequencies in one or more categories.

Test Statistic

A quantity derived from sample data used to make a decision about a hypothesis test.

Z

'Z' often represents the Z-score in statistics, which is the number of standard deviations a data point is from the mean of the data set.