0
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.
What else can I help you with?
What is the average of 21 18 15?
It is: 21+18+15 = 54 and 54/3 = 18 which is the mean average
What is the mean of the numbers 15 and 21 (not including 15 and 21)?
18
What is the mean of 18 18 15 18 18 24 21 21 24 13?
19
What is the mean of 15 16 17 18 19 20 21?
I added up all the numbers to get 126, then i divided that all by 7 to get 18. your final answer is 18.
What is the mean of 6 8 12 16 18 18 20 21 23 26 29 32 34 37 59?
Mean = Sum/Count = 359/15 = 23.933...
What is the mean of 21 19 12 18 and 20?
Mean (12, 18, 19, 20, 21) = 18
What is the average of 21 18 15?
It is: 21+18+15 = 54 and 54/3 = 18 which is the mean average
What is the mean of the numbers 15 and 21 (not including 15 and 21)?
18
What is the mean of 18 18 15 18 18 24 21 21 24 13?
19
What is the mean of 15 16 17 18 19 20 21?
I added up all the numbers to get 126, then i divided that all by 7 to get 18. your final answer is 18.
What is the mean median and mode of 16 21 20 19 21 78 18 2 1 20?
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
What is 15 and 3 more jumps of 2?
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.
What is the even number between 15 and 21?
They are 16, 18 and 20.
What is the mean of 6 8 12 16 18 18 20 21 23 26 29 32 34 37 59?
Mean = Sum/Count = 359/15 = 23.933...
What is the mean of the data set 21 25 21 19 16 18 19 19 16 24 21 21 17 26 20 23 20 21 20?
20.37 is the mean.
What is the 25th and the 75th percent quartile of 15 16 17 18 19 20 21 22?
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})
Which of these numbers is not composite 15 18 19 20 21?
19. It is prime.
