Below are the mathematics grades of 30 Grad 7 students in the last quarter.
78 98 76 89 89 83
87 75 72 91 90 79
Arrange first from lowest to highest:
72 75 76 78 79 83 87 89 89 90 91 98
Mean:
= 72 + 75 + 76 + 78 + 79 + 83 + 87 + 89 + 89 + 90 + 91 + 98
= 1007 / 12
= 83.92
Median
= 72 75 76 78 79 83 87 89 89 90 91 98
= 83 and 87
= 83 + 87
= 170 / 2
= 85
Mode
= 72 75 76 78 79 83 87 89 89 90 91 98
= 89
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