The table displays the scores of students on a recent exam. Find the mean of the scores to the nearest 10th.

Question

Score Number of Students
6060 33
6565 77
7070 33
7575 33
8080 55
8585 44
9090 55
9595 33

Answer 1

To find the mean of the scores, we need to multiply each score by the number of students who received that score, then add all those values together, and divide by the total number of students.

(60*33) + (65*77) + (70*33) + (75*33) + (80*55) + (85*44) + (90*55) + (95*33) = 1980 + 5005 + 2310 + 2475 + 4400 + 3740 + 4950 + 3135 = 29095

Now, sum up the total number of students: 33 + 77 + 33 + 33 + 55 + 44 + 55 + 33 = 363

Finally, divide the total score (29095) by the total number of students (363): 29095 / 363 ≈ 80.1

Therefore, the mean of the scores to the nearest 10th is 80.1.

Answer 2

The table displays the scores of students on a recent exam. Find the mean of the scores to the nearest 10th.
Score Number of Students
60 3
65 7
70. 3
75 3
80. 5
85 4
90 5
95 3

Answer 3

To find the mean of the scores, we need to multiply each score by the number of students who received that score, then add all those values together, and divide by the total number of students.

(60*3) + (65*7) + (70*3) + (75*3) + (80*5) + (85*4) + (90*5) + (95*3) = 180 + 455 + 210 + 225 + 400 + 340 + 450 + 285 = 2545

Now, sum up the total number of students: 3 + 7 + 3 + 3 + 5 + 4 + 5 + 3 = 30

Finally, divide the total score (2545) by the total number of students (30): 2545 / 30 = 84.83

Therefore, the mean of the scores to the nearest 10th is 84.8.

Answer 4

innocorrect

Answer 5

Let's correct the calculation.

(60*3) + (65*7) + (70*3) + (75*3) + (80*5) + (85*4) + (90*5) + (95*3) = 180 + 455 + 210 + 225 + 400 + 340 + 450 + 285 = 2545

Now, sum up the total number of students: 3 + 7 + 3 + 3 + 5 + 4 + 5 + 3 = 33

Finally, divide the total score (2545) by the total number of students (33): 2545 / 33 ≈ 77.3

Therefore, the mean of the scores to the nearest 10th is 77.3.