Average = 20
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(21+15+19+28+10+17+9+15+26+14+10+18+24+12+16) / 15 = 16.93 recurring (that is, 16.93333...)
19
the median is the number in the middle when arranged in numerical order. 11 12 18 21 24 24 . There is no one number in the middle so take the two middle numbers and average; 18 + 21 divided by 2 = 19 and 1/2
Mean is the average of all the numbers.Sum of all the listed numbers = 584Total of all the listed numbers = 25584 / 25 = 23.36Mean = 23.36
43 - 19 = 16 - 14? No, 24 is not equal to 2.