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Rachel took 5 tests in her history class. Her test scores are shown in the table below. Rachel’s Test Scores Chapter in Test History Book Score 1 2 3 4 5 60 90 80 70 60 Rachel’s teacher calculated the mean, median, mode, and range of Rachel’s set of test scores. Which of these measures has the highest value? mean 60 90 80 70 60 360 72 5 5 median 60 60 70 80 90 mode 60 range 90 60 30 Jacob scored an 88, 92, 74, and 80 on his first four math tests. What score must he receive on his next math test to finish the grading period with a mean of 82? The mean would equal the five scores added together and divided by 5… F. 66 G. 76 H. 82 I. 88 Multiply each side of the equation by 5… 88 92 74 80 x (5) (5)82 5 410 88 92 74 80 x Combine Like 410 334 x Terms… 334 334 Subtract 334 from 76 x each side of the equation… Emma bowled scores of 182, 164, 168, 164, 174, and 152 in the district and regional bowling tournaments. Which of the following scores would Emma need in her next game to give her a median score of 168? Write the scores in order from smallest to largest using the scores given and the answer choices…then find the median (middle)… A. 30 A. 30, 152, 164, 164, 168, 174, 182 B. 150 B. 150, 152, 164, 164, 168, 174, 182 C. 164 C. 152, 164, 164, 164, 168, 174, 182 D. 188 D. 152, 164, 164, 168, 174, 182, 188 Bailey scored 21, 16, 12, and 14 points in his first four basketball games. Which of the following scores would Bailey need in his next game to have a mean score of 15? The mean would equal the five scores added together and divided by 5… F. 10 G. 12 H. 14 I. 15 Multiply each side of the equation by 5… 21 16 12 14 x (5) (5)15 5 75 21 16 12 14 x Combine Like 75 63 x Terms… 63 63 12 x Subtract 63 from each side of the equation… Mr. Williams recorded his 1st period science test scores on a stem-and-leaf plot as shown below. Science Test Grades 6 7 8 9 5 3 0 1 9 8 2 8 8 5 Key 6|5 = 65 Abigail was absent and needed to take the test. Which score must Abigail receive to have the mode of the test scores be remain unchanged? A. 65 B. 80 C. 88 D. 95 The mode is the number in the set of data that occurs the most. In this set of data, 88 is the mode. To keep the mode at 88, she must get an 88 on her test.