How are these three coefficients related mathematically?

What will be an ideal response?


ANS: Spearman rho and the phi coefficient are derived from the Pearson r. They are simpler versions of the Pearson.

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Which teacher comment about scoring essay tests will improve the reliability of the test?

a. "I can tell how much a student knows by scanning the student's paper." b. "I can do a better job of scoring when I don't know whose paper I'm reading." c. "I like to read all the student's answers at one time to get an overview of what the student knows." d. "The time it takes to separate test papers item by item is time I could use more profitably for other purposes."

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_____________ sociology collaborates outside of academia with practical problems, addressing a wide range of social issues that concern local, national, and global groups.

a. Reform b. Pragmatist c. Public d. Contemporary

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How can we determine if a skewed distribution is negatively or positively skewed?

What will be an ideal response?

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Someone says that her goal is to “study harder.” Rewritten as an effective goal statement, her intention can become:

a. ?Stop being so lazy b. ?Spend two hours each week reviewing course materials for every hour spent in class c. ?Both a and b could be effective goal statements

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