To calculate the mean you add all of the numbers together, and then divide by how many numbers were added.
In this case, the mean is 21.
To find the mean of the numbers, first sum them up: 18 + 15 + 21 + 10 + 24 + 21 + 18 + 16 + 20 + 22 + 18 + 18 + 12 + 21 + 25 + 20 + 19 + 23 = 346. Then, divide this total by the number of values, which is 18. Thus, the mean is 346 ÷ 18 ≈ 19.22.
It is: 21+18+15 = 54 and 54/3 = 18 which is the mean average
18
19
I added up all the numbers to get 126, then i divided that all by 7 to get 18. your final answer is 18.
Mean (12, 18, 19, 20, 21) = 18
It is: 21+18+15 = 54 and 54/3 = 18 which is the mean average
18
19
I added up all the numbers to get 126, then i divided that all by 7 to get 18. your final answer is 18.
Mean = 21.6 Median = 19.5 Mode = 20 and 21 ------------------------------------------------------------------------ If the "2 1" (between 18 and 20 at the end) is supposed to be "21" then Mean = 26 Median = 20 Mode = 20
I think you mean 15+(3+2), which equals 20.20 jumps.=============================Answer #2:On the other hand, this contributor thinks you mean . . .start at 15 and jump 2, three times. If you do that, you land at 19.
They are 16, 18 and 20.
Mean = Sum/Count = 359/15 = 23.933...
20.37 is the mean.
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})
19. It is prime.