Psychological Statistics MCQs
Psychological Statistics MCQs
Try to answer these Psychological Statistics MCQs and check your understanding of the Psychological Statistics subject.
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1: Y can be most accurately predicted from x if the correlation between x and y is _________.
A. -0.68
B. -0.78
C. -0.98
D. -0.88
2: Determining a person's age (in years) would involve measurement on a(n) _____ scale of measurement.
A. Nominal
B. Ordinal
C. Interval
D. Ratio
3: What is the purpose of statistical analysis in psychological research?
A. To summarize and describe data
B. To draw conclusions and make inferences about populations based on sample data
C. To test hypotheses and examine relationships between variables
D. To ensure the ethical conduct of research studies
4: What is the role of descriptive statistics in psychological research?
A. To determine statistical significance
B. To organize and summarize data
C. To establish causation between variables
D. To evaluate the reliability and validity of measures
5: What is the mean in statistical terms?
A. The most frequently occurring value in a dataset
B. The middle value in a ranked dataset
C. The sum of all values divided by the total number of values
D. The difference between the highest and lowest values in a dataset
6: What does the standard deviation measure?
A. The range of values in a dataset
B. The average distance of each data point from the mean
C. The likelihood of obtaining a particular sample mean
D. The strength of the relationship between two variables
7: What is the p-value in hypothesis testing?
A. The probability of making a Type II error
B. The level of significance used to determine the rejection or acceptance of a null hypothesis
C. The estimated population parameter
D. The effect size of an experimental manipulation
8: What is a Type I error in hypothesis testing?
A. Rejecting a null hypothesis when it is true
B. Accepting a null hypothesis when it is false
C. Failing to reject a null hypothesis when it is true
D. Failing to accept a null hypothesis when it is false
9: What is a correlation coefficient?
A. A measure of the strength and direction of the linear relationship between two variables
B. The difference between the means of two independent groups
C. The ratio of variance explained by the independent variable
D. The probability of obtaining a specific sample mean
10: What does statistical power refer to in psychological research?
A. The probability of making a Type I error
B. The probability of making a Type II error
C. The ability to detect an effect or relationship when it truly exists
D. The likelihood of obtaining a significant p-value
11: What is a statistically significant result?
A. A result that is practically meaningful
B. A result that has a large effect size
C. A result that is unlikely to occur by chance alone, based on the chosen level of significance
D. A result that supports the research hypothesis
12: What is the purpose of inferential statistics?
A. To summarize and describe data
B. To make predictions about future outcomes
C. To generalize findings from a sample to a population
D. To examine relationships between variables within a dataset
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Psychological Statistics MCQs
