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Questions and Answers
What does a null hypothesis assert?
What does a null hypothesis assert?
- There is no significant difference between the groups being studied. (correct)
- There is a causal relationship between variables.
- The independent variable will influence the dependent variable.
- There is a prediction about the relationship between variables.
Which of the following statements is an example of a directional alternative hypothesis?
Which of the following statements is an example of a directional alternative hypothesis?
- There is a difference in anxiety levels between the two groups.
- Children with high IQ will exhibit more anxiety than children with low IQ. (correct)
- There is no difference in anxiety levels between high and low IQ children.
- Anxiety levels do not depend on IQ.
What is a characteristic of a non-directional alternative hypothesis?
What is a characteristic of a non-directional alternative hypothesis?
- It indicates only that a difference exists without specifying its nature. (correct)
- It is synonymous with a null hypothesis.
- It states that one variable causes the other to increase.
- It specifies the direction of the difference.
Which statement describes a hypothesis?
Which statement describes a hypothesis?
In hypothesis testing, what is the focus of the research hypothesis?
In hypothesis testing, what is the focus of the research hypothesis?
Flashcards
Hypothesis
Hypothesis
A specific prediction about the relationship between two or more measurable variables. It is a testable statement that reflects the aims of your research.
Null Hypothesis
Null Hypothesis
States that there is no relationship between the independent and dependent variables. It suggests that any observed differences are due to chance rather than the factor being studied.
Alternative Hypothesis
Alternative Hypothesis
Presumes that a relationship exists between the variables. It proposes that the independent variable has a significant effect on the dependent variable.
Directional Alternative Hypothesis
Directional Alternative Hypothesis
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Non-directional Alternative Hypothesis
Non-directional Alternative Hypothesis
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Study Notes
Hypothesis Definition
- A hypothesis is a specific proposition presented for testing through research.
- It's a prediction about the relationship between two or more measurable variables.
- A hypothesis is a declarative statement about the expected relationship or difference between phenomena.
- It's a testable statement reflecting the aims of the study.
Types of Hypotheses
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Null Hypothesis: States there's no relationship between independent and dependent variables. Example: There is no significant difference in the anxiety level of children with high IQs and those with low IQs.
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Alternative Hypothesis: Presumes a relationship exists between variables. This is often the research hypothesis. Example: There is a significant difference in the anxiety level of children with high IQs and those with low IQs.
Alternative Hypothesis Subtypes
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Directional Alternative Hypothesis: Specifies the type of difference between variables. Example: Children with high IQs will exhibit more anxiety than children with low IQs.
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Non-Directional Alternative Hypothesis: Doesn't specify the type of difference. Example: There is a difference in the anxiety level of children with high IQs and those with low IQs.
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