The Hypothesis That an Effect or Relationship Exists (Or Exists

question 35

Multiple Choice

The hypothesis that an effect or relationship exists (or exists in a specific direction) in the population is the ______.

• A) alternative hypothesis
• B) statistical hypothesis
• C) null hypothesis
• D) critical region

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Definitions:

Null Hypothesis

A statement in statistics that proposes there is no significant effect or difference between specified populations, any observed difference being due to sampling or experimental error.

Observed Difference

The apparent discrepancy or variation between two groups or conditions in an experiment or study.

Random Error

An unpredictable variation in data or experimental results, which occurs without a discernible pattern.

Systematic Variance

Variability in a set of scores that is the result of the independent variable; statistically, the variability of each group mean from the grand mean of all subjects.