ISEE Word Problems Question 224: Answer and Explanation
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Question: 224
4. Mrs. Babish scored the tests of her 10 students. She then calculated the mean, median, mode, and range for the test scores. The table gives the value of each of these statistical measures.
Measure | Value |
Mean | 84 |
Median | 86 |
Mode | 81 |
Ran
Correct Answer: C Explanation: The answer is C Adding 7 points to each student's score will not affect the range because both the lowest and highest scores are 7 points higher, leaving the difference the same. Adding 7 points to each score will, however, affect the mean, median, and mode. The mode is easiest to address, so start there: adding 7 points to the mode scores of 81 will bring those scores to 88. |