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Determining the correlation coefficient

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Reference no: EM131157459

1. Give an example of a number that cannot be a correlation coefficient (Pearson's r) and is a negative number.

2. Interpret the following statement. A researcher collected data on the correlation between grades in a course and the number of absences in the classroom. The r = -.38.

a. Write a sentence interpreting these findings.

b. Write another sentence explaining the findings if the other variable is the number of hours spent working per week and the r = .06.

3. What must the P-value be in order to reject it? Explain yourself.

4. What affects the probability of a Type II error?

5. What could be the issues of a researcher not finding any statistical significance in their research results?

Reference no: EM131157459

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