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Author Question: Assume that the correlation coefficient between class attendance and number of problems missed on an ... (Read 169 times)

javeds

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on: Jul 13, 2018
Assume that the correlation coefficient between class attendance and number of problems missed on an exam is (-.77). Which of the following statements regarding this finding is correct?
 
  a. students who had fewer absences answered more questions correctly
   b. students who had more absences answered more questions correctly
  c. a negative correlation value is impossible; there must be a mistake in the calculations
   d. the number of problems answered correctly is below the class mean

Question 2

Assume that within one study the regression equation relating daily saturated fat intake in grams (x) to blood cholesterol level (y) is Y-hat = 130 + 5X. What is the value of the y-intercept for this problem?
 
  a. 1
  b. 5
  c. 130
  d. impossible to determine


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moormoney

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Reply #1 on: Jul 13, 2018
Answer to Question 1

A

Answer to Question 2

C


javeds

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Reply 2 on: Jul 13, 2018
Great answer, keep it coming :)

xiazhe

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Reply 3 on: Yesterday
Wow, this really help

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