LONG TEST REVIEWER IN I3
Quiz by JONALD ROSARIO
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16 questions
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- Q1A researcher wants to determine whether there is a significant difference between the pre-test and post-test scores of students who attended a review session. They decide to use an independent samples t-test. What is the best evaluation of this choice?Correct, because independent samples t-test compares two sets of scores.Incorrect, because independent samples t-test cannot analyze numerical data.Incorrect, because independent samples t-test is used for unrelated groups, not the same participants' scores.Correct, because an independent samples t-test is always used for pre-test and post-test comparisons.30s
- Q2A researcher found that students who read more books tend to have higher GPA scores (r = 0.65, p < 0.05). The researcher concludes that reading more books directly causes higher GPAs. What is the best evaluation of this conclusion?Incorrect, because Pearson r should not be used for GPA scores.Incorrect, because correlation does not imply causation.Correct, because a strong correlation means one variable causes the other.Correct, because the p-value confirms a cause-effect relationship.30s
- Q3A researcher wants to determine the most common reasons why students arrive at school late. They decide to conduct one-on-one interviews with 10 students. What is the best critique of this method?Incorrect, because the small sample size may not accurately represent all students.Correct, because interviews are the only valid way to gather student opinions.Incorrect, because interviews should only be conducted with teachers.Correct, because interviews provide detailed reasons for student tardiness.30s
- Q4A study ranks students based on their academic performance and wants to determine if their rank is related to their participation in extracurricular activities. The researcher uses Pearson r. What is the best evaluation of this decision?Incorrect, because correlation cannot be tested between ranked and categorical data.Correct, because Pearson r is the most commonly used statistical tool.Incorrect, because Pearson r is used for numerical data, not ranked data.Correct, because Pearson r measures the strength of relationships between variables.30s
- Q5A researcher wants to compare the mean scores of two different sections in a mathematics exam. They decide to use a paired samples t-test. What is the best evaluation of this choice?Incorrect, because mean scores cannot be compared using a t-test.Incorrect, because a paired samples t-test is used for the same group measured twice.Correct, because a paired samples t-test can be used for any comparison of means.Correct, because a paired samples t-test compares two means.30s
- Q6A researcher investigates the effect of different teaching methods on student performance by using test scores from three separate classes. They analyze the results using ANOVA. What is the best evaluation of this choice?Incorrect, because ANOVA does not provide any statistical significance.Incorrect, because ANOVA is only suitable for two groups.Correct, because ANOVA is used to compare the means of three or more groups.Incorrect, because ANOVA can only analyze categorical data.30s
- Q7A researcher wants to analyze the effect of a new diet plan on weight loss among participants. They randomly assign participants to either the diet group or a control group. What statistical test is most appropriate for comparing the weight loss between these two groups?ANOVAPaired samples t-testIndependent samples t-testChi-square test30s
- Q8A researcher is interested in understanding the relationship between students' study time and their exam scores. They collect data from a group of students and calculate a correlation coefficient, finding a value of r = 0.8. How should the researcher interpret this result?The study time and exam scores have a strong positive correlation.There is no relationship between study time and exam scores.Study time causes higher exam scores because of the high correlation.The correlation of 0.8 indicates a weak relationship between the variables.30s
- Q9A researcher wants to understand the impact of a new student mentoring program on academic performance. They measure the GPA of students who participated in the program before and after its implementation. Which statistical test is most appropriate for analyzing the results?Independent samples t-testChi-square testANOVAPaired samples t-test30s
- Q10A researcher is studying the impact of sleep on academic performance and collects data from students about their average hours of sleep and their GPA. If they want to measure the strength and direction of the relationship between these two variables, which statistical method should they use?Chi-square testIndependent samples t-testPearson correlation coefficientANOVA30s
- Q11
What research instrument provides a guide for conducting structured or semi-structured verbal interactions?
Users enter free textType an Answer30s - Q12
Which research instrument involves taking systematic notes or using a checklist to record observations?
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What characteristic of a good research instrument ensures that it is not too lengthy but still gathers necessary data?
Users enter free textType an Answer30s - Q14
What approach to developing a research instrument involves creating a new tool specifically for the study's variables and scope?
Users enter free textType an Answer30s - Q15
What research instrument consists of a set of written questions designed to collect data from respondents?
Users enter free textType an Answer30s