Standard Deviation Using the Shortcut Formula

[MegaBIBILICIOUS]

thank you very much!

[FLhardcore772]

people complain about there crappy books lol, at least you university students get math professors that can speak English fluently.

go to a community college and try passing a math course taught by some Indian dude that sucks at explaining shit...

[RichardMrWood]

Crazy, I have that book.. i also subscribed to your channel because i thought you were a math teacher. i thinkn your more of a camper... unfortunatly- i wished to learn more aboiut math

[dgcanehdian]

Thank you!

[Masterballsackwood]

I love you

[pwnduggie]

how in the hell is this elementary level?

[sandy02668]

sorry sir, but the right answer is (0.57) and your answer is (0.48)is incorrect....plz explain wt is the matter?

[sandy02668]

hey everyone !!! this answer(0.48) is wrong and the correct answer is (0.57)

[sandy02668]

wt the hell is short cut

[aityadeen123]

it makes you wonder ,how someone from 1894 came out with this formula ?

[candybox3200]

Thanks for your example.. I'm currently using this textbook at Park U, in MO.. It helped..

But can you please explain:

Since the standard deviation,  Is not known, a t-distribution will be used to solve this problem.

E = t/2(s/n)

t/2 corresponding to 95% confidence level, where the number of degrees of freedom is given by

df = n – 1 df = 10 – 1 = 9 and  = 100 % - 95% = 0.05

I was so lost when I got to this point on pg 352 or 358

[MrRivn]

why the heck don't they teach us the shortcut in the first place, this is about 20 times easier than how I learned it.

Thanks.

[wtflez1]

Thank you so much!

[TransientWriting]

thank you

[jdis101]

does x represent your frequency from the classes?

[reebeccakonjo]

I like you. You're cool.

[tridentseven693]

I'm taking an online statistics class so I'm teaching myself. This video was awesome! Thank You

[Jackiieeeeex248]

I took stats last year, but totally forgot how to find standard deviation! My college professor totally did not explain it well enough, thank you so much!!

[70TheProfessor]

The shortcut method should give the same answer as the longer method. Be very careful of rounding; that is often a source of differences. This formula is not intended for use with grouped data.

[mrsshunnshine]

Hello, I have been working out both your shortcut version and the long version of standard deviation but my answers do not come out the same. Does it make a difference if I am using your short cut version on finding the standard deviation for grouped data or using midpoints of classes?

[NoZain]

you rock! thank you.



[swampcat8277]

Thank you so much! My teacher flew through this and I was so lost! I love how you did out everything before plugging any numbers into the equation. Extremely helpful!! Thank you so much!

[ZeizeTheDay]

thanks

[PiratesAndCowboys]

OH WOW. THANKS A MILLION.

[Willahification]

yup, would have went into my exam not knowing how todo SD, if it wasnt for U

[kphzorz]

Thanks, this really helped me out.

[Andressguillen]

thank you! youtube is starting to become my go-to, free personal tutor!

[mmarandola3]

Great! Helped me a lot!