A college professor conducted a study examining the association of two different methods of study with the amount students learned in introductory physics. He instructed his morning class to use Method A and his afternoon class to use Method B. The results showed that the average amount learned by the class using Method A was greater than the average amount learned by the class using Method B. Which of the following is NOT an appropriate conclusion concerning the reason for the difference in group averages? a - Learning may have been influenced by the time of day during which each class was taught. b - The study demonstrated that there is a correlation between study method and average amount learned. c - Method A is more effective than Method B.
A college professor conducted a study examining the association of two different methods of study with the amount students learned in introductory physics. He instructed his morning class to use Method A and his afternoon class to use Method B. The results showed that the average amount learned by the class using Method A was greater than the average amount learned by the class using Method B. Which of the following is NOT an appropriate conclusion concerning the reason for the difference in group averages?
a - Learning may have been influenced by the time of day during which each class was taught.
b - The study demonstrated that there is a correlation between study method and average amount learned.
c - Method A is more effective than Method B.
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