Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,603

Three new (related) pages:

Random Variables - Mean, Variance and Standard Deviation

How are they? Any mistooks?

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,283

Hi;

Okay! Very good.

Nice example, not only informative but mouth watering also.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

Offline

**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 7,501

hi MathsIsFun,

All good.

You might consider a link from Variance on the third page to your Standard Deviation and Variance page.

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,603

Thanks guys!

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

**gAr****Member**- Registered: 2011-01-09
- Posts: 3,479

Hi MathsIsFun,

They're good!

You may consider adding a few lines about central moments, and tell that variance is one of those.

"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense" - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,603

Good idea gAr

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

Pages: **1**