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Need to find and use standard deviation on EC 4031 scientific calculator

I have a very old scientific calculator (about 15 yrs old), EC 4031 brand is Tandy AKA Radioshack. desperately need to know how to use standard deviation and mean, for statistics. PLEASE HELP ME

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Sam is 5 years old...his older brother Tom is 3 times as old as Sam...when Sam is 20...how old will Tom be?


Well, Tom is 3 x 5 = 15 yrs now. Sam has 15 yrs to go to 20. Then Tom will be 15 + 5 = 30 yrs.

Or, Tom is 10 yrs older than Sam now, so when Sam is 20........

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The usb cable you require is a standard USB to mini-USB cable. MP3 or camera cables will work.

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I hope that helps.

___________________
Nuvi 200 series manuals available here.

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wernert@garmin.co.za www.garmin.co.za

Office: +27 11 251 9999
DIR +27 11 251 9956
Fax: +27 86 544 3972

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