The variance of 80 85 72 76 95 = 79.3
To calculate the mean of the numbers 80, 85, 72, 76, and 95, first add them together: 80 + 85 + 72 + 76 + 95 = 408. Then, divide the sum by the number of values, which is 5: 408 ÷ 5 = 81.6. Therefore, the mean is 81.6.
70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85 (including 70 and 85)
Equation: 90 + 85+ 80+76 = 331
62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88.60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90
83
To calculate the mean of the numbers 80, 85, 72, 76, and 95, first add them together: 80 + 85 + 72 + 76 + 95 = 408. Then, divide the sum by the number of values, which is 5: 408 ÷ 5 = 81.6. Therefore, the mean is 81.6.
70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85 (including 70 and 85)
155
Equation: 90 + 85+ 80+76 = 331
72 73 79 75 76 81 81 85 88
82.
The composite numbers are: 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86 ,87, 88
62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88.60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90
Four: 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100.Five: 60, 65, 70, 75, 80, 85, 90, 95, 100.Eight: 56, 64, 72, 80, 88, 96.Only 80 is on all three lists.
83
80
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