something okay how i meant to know ? :)
19
The average is 15.
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})
17, 19, 21
17, 19, 23, 29 and 31 are prime. 15, 21, 25 and 27 are composite..
19
The average is 15.
You add the numbers, then divide the result by 3. In this case you divide by 3 because there are 3 numbers.
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})
17, 19, 21
17, 19, 23, 29 and 31 are prime. 15, 21, 25 and 27 are composite..
Add all of the numbers, and divide the result by how many numbers there are.21 + 17 + 14 + 28 + 15 = 9595 / 5 = 19
15, 17, 19 and 21.
(21+15+19+28+10+17+9+15+26+14+10+18+24+12+16) / 15 = 16.93 recurring (that is, 16.93333...)
To find the median of the numbers 12, 13, 14, 15, 16, 17, 18, 19, 20, and 21, first, arrange them in order (they are already sorted). Since there are 10 numbers (an even count), the median is the average of the two middle numbers, which are 16 and 17. The median is therefore (16 + 17) / 2 = 16.5.
min= 12 max=21 median=17 mode=17 mean=191
21