On an international exam, students are asked to respond to a variety of backgrou

Question

On an international exam, students are asked to respond to a variety of background questions. For the 41 nations that participated in the exam, the correlation between the percentage of items answered in the background questionnaire (used as a proxy for student task persistence) and mean score on the exam was 0.725. Does this suggest there is a linear relation between student task persistence and achievement score? Write a sentence that explains what this result might mean. Click the icon to view the critical values table. Does this suggest there is a linear relation between student task persistence and achievement score? Choose the best response below. A. Yes, since |0.725| is greater than the critical value for 30. B. Yes, since |0.725| is less than the critical value for 30. C. No, since |0.725| is greater than the critical value for 30. D. No, since |0.725| is less than the critical value for 30. What does this result mean? A. Countries in which students answered a lesser percentage of items in the background questionnaire. tended to have higher mean scores on the exam B. Countries in which students cheated on the exam also cheated on the terms in the background questionnaire. C. Countries in which students answered a greater percentage of items in the background questionnaire tended to have higher mean scores on the exam. D. There is no linear relation between countries in which students answered a greater percentage of items in the background questionnaire and higher mean.

Explanation / Answer

1) Yes there is a correlation as r value of 0.725 is greather than value at 30.

A option.

2) C option as answered questions and high score are positively correlated not negatively. So, if one increases other also increases.

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