Study Guide for Practical Statistics for Educators by Ravid Ruth;Oyer Elizabeth;

Author:Ravid, Ruth;Oyer, Elizabeth;
Language: eng
Format: epub
Publisher: Rowman & Littlefield Publishers, Incorporated
Published: 2011-01-01T00:00:00+00:00

S8.3. Compute a correlation coefficient.

S8.4. Report the variable names and correlation.

S8.5. Is the correlation significant? (Assume the critical value r = .095 with a preset significance level=.05). Explain your answer.

S8.6. Describe the magnitude and direction of the correlation.

S8.7. What decision can you make about the null hypothesis?

S8.8. Create a scatterplot that shows the relationship between the math and reading scores. Are there any outliers?

Chapter 8 Answers for Microsoft™ Excel Exercises

(S8.2)

a) Null Hypothesis: The correlation of reading and math scale scores = 0, or There is no significant correlation between reading and math scores.

b) Alternative Directional Hypothesis: The correlation of reading and math scale scores is > 0, or There is a significant positive correlation between reading and math scores.

(S8.4)

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