Podcast
Questions and Answers
What is the primary purpose of the null hypothesis in a research study?
What is the primary purpose of the null hypothesis in a research study?
- To provide evidence that there is no real effect or relationship in the population (correct)
- To test the alternative hypothesis
- To calculate the variance in the sample data
- To prove that there is a significant difference between two variables
What does rejecting the null hypothesis imply?
What does rejecting the null hypothesis imply?
- There is sufficient evidence to conclude there is a real effect or relationship in the population (correct)
- There is no real effect or relationship in the population
- The sample data is not representative of the population
- The research study is flawed
What is the primary function of variance in statistical analysis?
What is the primary function of variance in statistical analysis?
- To test the null hypothesis
- To calculate the mean of a dataset
- To quantify the spread or dispersion of values within a dataset (correct)
- To calculate the correlation between two variables
What are the two main types of variance discussed in the context of statistical analysis?
What are the two main types of variance discussed in the context of statistical analysis?
Why do researchers use statistical analysis in psychology?
Why do researchers use statistical analysis in psychology?
What is the biggest challenge in sciences like psychology?
What is the biggest challenge in sciences like psychology?
When should you calculate the population variance?
When should you calculate the population variance?
What is the purpose of unbiased estimation of population variance?
What is the purpose of unbiased estimation of population variance?
What is the formula to estimate population variance?
What is the formula to estimate population variance?
What is the significance of the three estimators of population variance?
What is the significance of the three estimators of population variance?
What is the term for the sample standard deviation divided by the square root of the sample size?
What is the term for the sample standard deviation divided by the square root of the sample size?
What type of research focuses on the principles of behavior and mental processes?
What type of research focuses on the principles of behavior and mental processes?
What is the primary advantage of within-subjects designs?
What is the primary advantage of within-subjects designs?
What is the statistical technique used to predict a variable from one or more other variables?
What is the statistical technique used to predict a variable from one or more other variables?
What is the term for the portion of the data that is not explained by a statistical model?
What is the term for the portion of the data that is not explained by a statistical model?
What is the purpose of repeating the process of calculating the sampling distribution in Example 2?
What is the purpose of repeating the process of calculating the sampling distribution in Example 2?
Why is the denominator in Example 3 equal to 2?
Why is the denominator in Example 3 equal to 2?
What does a statistical power of 80% mean?
What does a statistical power of 80% mean?
Why do we need to consider the risks of false positives and false negatives in statistical tests?
Why do we need to consider the risks of false positives and false negatives in statistical tests?
What is the result of using a biased estimator of population variance, as shown in Example 2?
What is the result of using a biased estimator of population variance, as shown in Example 2?
What does a small p-value typically indicate?
What does a small p-value typically indicate?
Why is the psychology field more open to criticism?
Why is the psychology field more open to criticism?
What is a consequence of clean research designs in psychology?
What is a consequence of clean research designs in psychology?
Why is the replication crisis centered on psychology?
Why is the replication crisis centered on psychology?
What is a result of a large p-value?
What is a result of a large p-value?
What is the purpose of a statistically efficient estimator in statistical analysis?
What is the purpose of a statistically efficient estimator in statistical analysis?
Which type of research involves the manipulation of variables to observe their effect on a specific outcome?
Which type of research involves the manipulation of variables to observe their effect on a specific outcome?
What is the primary advantage of using a between-subjects design in experimental research?
What is the primary advantage of using a between-subjects design in experimental research?
What is the purpose of residual analysis in statistical modeling?
What is the purpose of residual analysis in statistical modeling?
Which type of research is focused on direct application to real-world problems?
Which type of research is focused on direct application to real-world problems?
What is the purpose of counterbalancing in within-subjects designs?
What is the purpose of counterbalancing in within-subjects designs?
What is the term for a statistical model that includes multiple independent variables?
What is the term for a statistical model that includes multiple independent variables?
What is the primary advantage of using a factorial design in experimental research?
What is the primary advantage of using a factorial design in experimental research?
What is the purpose of a statistical test in research?
What is the purpose of a statistical test in research?
What is the term for the portion of the data that is not explained by a statistical model?
What is the term for the portion of the data that is not explained by a statistical model?
