answersLogoWhite

0

Answer is Square-root(14) or approximately +/-3.74.

Explanation:

To find the standard deviation, you must first find the mean of the population. In this case, the mean is (3+6+12)/3 = 21/3 = 7.

Then, we take the Square root of (average of the Squares of (mean - each number)).

= Square-root of ( [ (7-3)^2 + (7-6)^2 + (7-12)^2 ] / 3 )

= Square root of ( [ 16 + 1 + 25 ] / 3 )

= Square root of (42 / 3)

= Square root of (14)

User Avatar

Wiki User

15y ago

Still curious? Ask our experts.

Chat with our AI personalities

JordanJordan
Looking for a career mentor? I've seen my fair share of shake-ups.
Chat with Jordan
BlakeBlake
As your older brother, I've been where you are—maybe not exactly, but close enough.
Chat with Blake
ViviVivi
Your ride-or-die bestie who's seen you through every high and low.
Chat with Vivi

Add your answer:

Earn +20 pts
Q: What is the standard deviation of 3 6 and 12?
Write your answer...
Submit
Still have questions?
magnify glass
imp