55 + 34 + 31 + 27 + 21 + 21 + 20 + 17 + 15 + 15 = 256
16 + 16 + 16 + 17 + 18 + 18 + 18 + 19 + 19 + 20 + 20 + 20 + 21 = 238
24 + 23 + 22 + 21 + 20 + 19 + 18 + 17 + 16 + 15 + 14 + 13 + 12 + 11 + 10 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 300
30 + 1
32+14+20+18+16+31+21+16=168
The answer is 144, because 1+3 is 4 add 5=9 add 7=16 add 9=25+11= 36+13=49+15=64+17=81+19=100+21=121+23=144. And there you go
16 + 16 + 16 + 17 + 18 + 18 + 18 + 19 + 19 + 20 + 20 + 20 + 21 = 238
21+21+17=59
491
In the example provided, the quartiles are: 25% = 16.5 (the median of {15, 16, 17, 18}) 50% = 18.5 (the median of {15, 16, 17, 18, 19, 20, 21, 22}) 75% = 20.5 (the median of (19, 20, 21, 22})
24 + 23 + 22 + 21 + 20 + 19 + 18 + 17 + 16 + 15 + 14 + 13 + 12 + 11 + 10 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 300
15/20 + 6/20 = 21/20 or 1 and 1/20
17 + 21 = 38 17 x 21 = 357
6/20 + 15/20 = 21/20 = 1 and 1/20 or 0.3 + 0.75 = 1.05
4 + 17 = 21
Order them: 15 16 17 21 21 Find the middle one: 17 That is the median
13 10 17 15 21 13 - 10 = -3 10 - 17 = +7 17 - 15 = -2 15 - 21 = +6 The negative numbers alternate with the positive numbers The negative numbers are augmented by +1 each step The positive numbers are diminished by -1 each sterp So the next step from 21 is a negative and should be -2 increased by +1 to -1 giving a new value of 20 Then the next step is a positive and should be +6 decreased by -1 to +5 giving 25 13 - 10 = -3 10 - 17 = +7 17 - 15 = -2 15 - 21 = +6 21 - 20 = -1 20 - 25 = +5
17 plus 21 equals 38