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2. Causal vs. Directional Hypothesis | Comparisons & Examples

   study.com/academy/lesson/causal-relational-hypotheses-definitions-examples.html

   A directional hypothesis is when someone makes a specific prediction about an effect or relationship between two variables. For example, "caffeine is linked to an increase in activity" is a ...

3. One-Tailed vs. Two-Tailed Tests | Overview & Examples

   study.com/learn/lesson/one-tailed-vs-two-tailed-tests-overview-examples.html

   A non-directional hypothesis, also known as a two-tailed hypothesis, is used to determine if there is a statistically significant difference between two groups in either direction. An example ...

4. Formulation of Hypothesis & Examples - Lesson | Study.com

   study.com/academy/lesson/formulating-the-research-hypothesis-and-null...

   Directional hypothesis: Predicts a directional relationship between variables. Rather than simply predicting that there will be a change, a directional hypothesis includes the expected direction ...

5. Alternative Hypothesis in Statistics | Definition & Examples

   study.com/academy/lesson/alternative-hypothesis-definition-example.html

   Yes, the alternative hypothesis is also known as the research hypothesis. It is also sometimes called the directional hypothesis. In many ways, it is the hypothesis being tested in a test of ...

6. One-Tailed Test: Definition & Examples - Lesson - Study.com

   study.com/academy/lesson/one-tailed-test-definition-examples.html

   This examination calls for two separate one-tailed tests of significance. one-tailed test is a type of significance test used when the hypothesis being tested is asking whether some value is ...

7. Null Hypothesis | Definition & Examples - Lesson - Study.com

   study.com/learn/lesson/null-hypothesis-how-to-write.html

   A hypothesis, in scientific studies, is defined as a proposed explanation for an observed phenomena that can be subject to further testing. A well formulated hypothesis must do two things: be able ...

8. What is a directional hypothesis? | Homework.Study.com

   homework.study.com/explanation/what-is-a-directional-hypothesis.html

   A directional hypothesis is useful when the researcher is already familiar with the subject matter. Answer and Explanation: 1 A directional hypothesis is also known as a one-tailed test, and is a prediction made that is based on past knowledge of the subject.

9. Video: Causal vs. Directional Hypothesis - Study.com

   study.com/academy/lesson/video/causal-relational-hypotheses-definitions...

   Short Summary. Researchers often develop hypotheses, or statements that propose a relationship between two or more variables, prior to conducting their studies. A relational hypothesis is one that ...

10. Two-Tailed Test in Statistics | Overview, Formula & Example

    study.com/academy/lesson/two-tailed-test-formula-examples.html

    A two-tailed hypothesis test example: A machine is used to fill bags with coffee, and each bag is 1 kg. A randomly selected sample of 30 bags has a mean weight of 1.01 kg with a standard deviation ...

11. Explain the difference between directional and non-directional...

    homework.study.com/explanation/explain-the-difference-between-directional-and...

    Answer to: Explain the difference between directional and non-directional research hypotheses. By signing up, you'll get thousands of step-by-step...