vafi88
Topic Author
Posts: 2981
Joined: Sun Apr 08, 2001 10:32 am

### A Little Help With Standard Deviation - Please

Hey guys. I've been procrastinating a little bit, and with the test tomorrow, I'm having to write out the whole equation (which takes about 10 minutes and is about 3 miles long). I need to know how to plug it into my TI-83 so I can actually do all of the problems on my test tomorrow. I know how to get to the standard deviation. I get to:

2nd - Stat, then scroll to MATH, and then go down to StdDev(

I don't know what to plug into the parenthasies from StdDEV(

If any of you can help, it'd greatly be appreciated.
I'd like to elect a president that has a Higher IQ than a retarted ant.

jhooper
Posts: 5561
Joined: Thu Dec 13, 2001 8:27 pm

### RE: A Little Help With Standard Deviation - Please

Well, I can't remember how to work the TI-83, but if all else fails, Standard Deviation isn't all that hard to do on pencil and paper, assuming you don't have lots of weird numbers
Last year 1,944 New Yorkers saw something and said something.

7574EVER
Posts: 462
Joined: Sun Jan 04, 2004 4:47 pm

### RE: A Little Help With Standard Deviation - Please

Here's the way my professor taught us to do it. Remember the acronym..

The first letter of each word is the next step that needs to be done.

1.)Mean - figure out the mean (average) of all the numbers being used
2.)Dogs - figure out the deviation of all the numbers being used
3.)Send - square each of the deviations
4.)Meannies - figure out the mean of all the new numbers from step three.
5.)Running- then get the square root of the answer to step four.

After step five you should have the standard deviation.

I know you wanted to know how to put in into the TI-83, but since I can't help you there hopfully this can make it easier if you end up doing it on paper
Right rudder....Right rudder...Come on, more right rudder....Right rudder......Aw forget it, I quit!!

L-188
Posts: 29881
Joined: Wed Jul 07, 1999 11:27 am

### RE: A Little Help With Standard Deviation - Please

Sorry can't help.

My graphing calculator is a Casio.
OBAMA-WORST PRESIDENT EVER....Even SKOORB would be better.

TYSGoVols
Posts: 610
Joined: Mon Jan 26, 2004 3:44 am

### RE: A Little Help With Standard Deviation - Please

If you can figure out teh variance then SD is not that hard

V squared = SD

SD suqare rooted = V

Not sure of any huge formulas though.

<>< Garen
Rocky Top You'll Always be home sweet home to me, Good ole' Rocky Top WOOOOO

### Who is online

Users browsing this forum: ACA033, NoTime, salttee, Tkfan and 3 guests

### Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos