First put them in ascending order. 1, 5, 7, 9, 9, 12, 14, 15, 18 Mean is 10 Median is 9 Mode is 9 Range is 17
9.75
(21+15+19+28+10+17+9+15+26+14+10+18+24+12+16) / 15 = 16.93 recurring (that is, 16.93333...)
Mean: 13.6 Median: 15 Mode: 16, 18, 15, 9, 10
10
15
One possible set is {9, 9, 10, 11, 12, 15, 18}
115/10 = 11.5
The mean absolute deviation is 2
First put them in ascending order. 1, 5, 7, 9, 9, 12, 14, 15, 18 Mean is 10 Median is 9 Mode is 9 Range is 17
9.75
12+5+9+10=36/4=9 9 is the Mean of 12, 5, 9, and 10 To find the mean of something, add all the figures and then divide by the number of figures.
12
(21+15+19+28+10+17+9+15+26+14+10+18+24+12+16) / 15 = 16.93 recurring (that is, 16.93333...)
Mean: 13.6 Median: 15 Mode: 16, 18, 15, 9, 10
180. 9 * 20 = 180 10 * 18 = 180 12 * 15 = 180
12 for 15 songs