someone help me i dont get the standard deviation

Question

bibby · Answer

The concept? Do you have a specific problem you'd like to work through?

anonymous · Answer

uuuhhhh its so long......

geekfromthefutur · Answer

Thats easy i think she wants the defin.

bibby · Answer

you do some explaining while I google this lol

anonymous · Answer

i dont get the last column part where u square root the thingy whatever its called im so confused beacuse i kinda fell asleep in math haha oops :/

geekfromthefutur · Answer

lol ok

anonymous · Answer

haha yup

geekfromthefutur · Answer

The Standard Deviation is a measure of how spread out numbers are.

Its symbol is σ (the greek letter sigma)

The formula is easy: it is the square root of the Variance.

anonymous · Answer

im so lost

geekfromthefutur · Answer

ok let me break it down

geekfromthefutur · Answer

You and your friends have just measured the heights of your dogs (in millimeters): The heights (at the shoulders) are: 600mm, 470mm, 170mm, 430mm and 300mm.

Find out the Mean, the Variance, and the Standard Deviation.

geekfromthefutur · Answer

Standard Deviation: σ = √21,704 = 147.32... = 147 (to the nearest mm)

geekfromthefutur · Answer

Got it?

anonymous · Answer

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