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Cramming One Thursday, researchers gave students enrolled
Chapter 5, Problem 11RE(choose chapter or problem)
Problem 11RE
Cramming One Thursday, researchers gave students enrolled in a section of basic Spanish a set of 50 new vocabulary words to memorize. On Friday, the students took a vocabulary test. When they returned to class the following Monday, they were retested—without advance warning. Both sets of test scores for the 25 students are shown below.
a) Create a graphical display to compare the two distributions of scores.
b) Write a few sentences about the scores reported on Friday and Monday.
c) Create a graphical display showing the distribution of the changes in student scores.
d) Describe the distribution of changes.
Questions & Answers
QUESTION:
Problem 11RE
Cramming One Thursday, researchers gave students enrolled in a section of basic Spanish a set of 50 new vocabulary words to memorize. On Friday, the students took a vocabulary test. When they returned to class the following Monday, they were retested—without advance warning. Both sets of test scores for the 25 students are shown below.
a) Create a graphical display to compare the two distributions of scores.
b) Write a few sentences about the scores reported on Friday and Monday.
c) Create a graphical display showing the distribution of the changes in student scores.
d) Describe the distribution of changes.
ANSWER:
a) A graphical display showing the comparison between the two distributions of scores can be seen below:
b) On Friday, the majority of students scored between 25 and 40 points, with 12 students scoring 40 or more points and three students scoring 10 or less points. On M