To find the mean of the scores, we first multiply each score by the number of students who received that score:
(75 * 2) + (80 * 3) + (85 * 9) + (90 * 8) + (95 * 9) = 150 + 240 + 765 + 720 + 855 = 2730
Next, we add up the total number of students:
2 + 3 + 9 + 8 + 9 = 31
Finally, we divide the total score by the total number of students to find the mean:
2730 / 31 ≈ 88.1
Therefore, the mean of the scores is 88.1 to the nearest tenth.
The table displays the scores of the students on a recent exam. Find the mean of the scores to the nearest 10th
Score: 75, 80, 85, 90, 95
Number of students 2, 3, 9, 8, 9
5 answers
What is the median number of goals scored?
0, 2. 4, 4, 5, 5, 5, 5
0, 2. 4, 4, 5, 5, 5, 5
To find the median of the number of goals scored, we first arrange the numbers in ascending order:
0, 2, 4, 4, 5, 5, 5, 5
Since there are 8 numbers, the median will be the average of the two middle numbers. In this case, the two middle numbers are 4 and 5.
(4 + 5) / 2 = 4.5
Therefore, the median number of goals scored is 4.5.
0, 2, 4, 4, 5, 5, 5, 5
Since there are 8 numbers, the median will be the average of the two middle numbers. In this case, the two middle numbers are 4 and 5.
(4 + 5) / 2 = 4.5
Therefore, the median number of goals scored is 4.5.
What is the range of minutes students brushed their teeth?
1, 1.5, 2, 2, 3, 3, 3
1, 1.5, 2, 2, 3, 3, 3
To find the range of minutes students brushed their teeth, we first need to determine the highest and lowest numbers in the data set.
The highest number in the data set is 3 minutes.
The lowest number in the data set is 1 minute.
To find the range, we subtract the lowest number from the highest number:
3 - 1 = 2
Therefore, the range of the minutes students brushed their teeth is 2 minutes.
The highest number in the data set is 3 minutes.
The lowest number in the data set is 1 minute.
To find the range, we subtract the lowest number from the highest number:
3 - 1 = 2
Therefore, the range of the minutes students brushed their teeth is 2 minutes.
1 answer