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
60
2
2
65
65
1
1
70
70
8
8
75
75
6
6
80
80
6
6
85
85
3
3
90
90
4
4
To find the mean, we need to add up all the scores and divide by the total number of students:
(60+60+65+65+70+70+70+70+70+70+70+70+75+75+75+75+75+75+80+80+80+80+80+80+85+85+85+90+90+90+90)/38
Simplifying this expression gives us:
2330/38 = 61.32
Rounding to the nearest tenth, the mean score is 61.3.
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
2
65
1
70
8
75
6
80
6
6
85
3
90
4
To find the mean, we need to add up all the scores and divide by the total number of students:
(60+65+70+70+70+70+70+70+70+70+75+75+75+75+75+75+80+80+80+80+80+80+85+85+85+90+90+90+90) / (2+1+8+6+6+3+4)
Simplifying this expression gives us:
2230 / 30 = 74.33
Rounding to the nearest tenth, the mean score is 74.3.
The table displays the scores of students on a recent exam. Find the mean of the scores to the nearest 10th.
Score
70
75
80
85
90
Number of Students
8
9
4
1
6
To find the mean, we need to add up all the scores and divide by the total number of students:
(70+70+70+70+70+70+70+70+75+75+75+75+75+75+75+75+75+80+80+80+80+85+90+90+90+90+90+90) / (8+9+4+1+6)
Simplifying this expression gives us:
2140 / 28 = 76.43
Rounding to the nearest tenth, the mean score is 76.4.
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
80
5
5
85
9
90
5
95
6
100
9
To find the mean, we need to add up all the scores and divide by the total number of students:
(80+80+80+80+80+85+85+85+85+85+85+85+85+85+85+90+90+90+90+90+95+95+95+95+95+95+100+100+100+100+100+100+100+100+100+100)/53
Simplifying this expression gives us:
5445/53 = 102.74
Rounding to the nearest tenth, the mean score is 102.7.