Question
Mr. Phillips is a10 th grade history teacher. After grading the first two exams in his class, he computed the mean and standard deviation for
Mr. Phillips is a10thgrade history teacher. After grading the first two exams in his class, he computed the mean and standard deviation for each exam.
| Mean Exam Score | Standard Deviation of Exam Scores | |
| Exam 1 | 91 | 6.8 |
| Exam 2 | 92 | 4.4 |
Which of the following best describes what thestandard deviationtells Mr. Phillips about the exams?
Group of answer choices
The scores on Exam 1 were more spread out than the scores on Exam 2.
The scores on Exam 1 were more consistent than the scores on Exam 2.
The scores on Exam 1 were all lower than the scores on Exam 2.
The scores on Exam 1 were better at measuring learning than the scores on Exam 2.
The scores on Exam 1 were all higher than the scores on Exam 2.
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Essentials of Business Analytics
Authors: Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson
2nd edition
1305627733, 978-1305861817, 1305861817, 978-0357688960, 978-1305627734
