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Describe the two common misinterpretations of the -value discussed in the text, and state the actual definition of a -value.
Question: Describe the two common misinterpretations of the -value discussed in the text, and state the actual definition of a -value.
Sample answer: One common misinterpretation is believing that the -value represents the probability that the null hypothesis is true. Another misinterpretation is assuming that equals the probability of replicating a statistically significant result. The actual definition of the -value is the probability of observing the sample data if the null hypothesis were true.
Key points:
- Identifies the misinterpretation that the -value is the probability that the null hypothesis is true.
- Identifies the misinterpretation that is the probability of replicating the result.
- States that the -value is the probability of observing the sample data if the null hypothesis were true.
Rubric: The student must explicitly recall both misinterpretations (probability of null being true, and probability of replication being ) and state the correct definition (probability of observing the sample data if the null were true).
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Research Methods in Psychology - 4th American Edition @ KPU
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