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**mathaholic****Member**- From: Juliania
- Registered: 2012-11-29
- Posts: 2,870
- Website

Since Euler Avenue is a little inactive, let's give life to it:

Okay, so I'll start from showing you some examples of the standard deviation, and not gonna teach you, but I just want you to correct me in case of my mistakes in calculation.

**Note: I will use the whole population for these examples.**

**1.** 62, 35, 17, 27 and 59

62+35+17+27+59

97+44+59

103+97

200

200 / 5 = 40

62 - 40 = 22

35 - 40 = -5

17 - 40 = -23

27 - 40 = -13

59 - 40 = 19

22 ^ 2 = 484

5 ^ 2 = 25

17 ^ 2 = 289

27 ^ 2 = 729

59 ^ 2 = 3481

484+25+289+729+3481

509+1018+3481

4499+509

5008

5008 / 5 = 1,001.6 ~ 1,002

(sqrt)1,002 = 31.65 ~ **32**

"What is the square root of 2? 1.4141592653589793238" Seriously, I thought it was that. Too round?

3.141592653589793238...

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 88,714

Hi mathaholic;

**In mathematics, you don't understand things. You just get used to them.**

**I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

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**mathaholic****Member**- From: Juliania
- Registered: 2012-11-29
- Posts: 2,870
- Website

Why you don't get it? It's just step by step anyways.

"What is the square root of 2? 1.4141592653589793238" Seriously, I thought it was that. Too round?

3.141592653589793238...

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 88,714

I meant I do not think that is the right answer.

22 ^ 2 = 484

5 ^ 2 = 25

17 ^ 2 = 289

27 ^ 2 = 729

59 ^ 2 = 3481

Please check that.

**In mathematics, you don't understand things. You just get used to them.**

**I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

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**mathaholic****Member**- From: Juliania
- Registered: 2012-11-29
- Posts: 2,870
- Website

It's correct!

"What is the square root of 2? 1.4141592653589793238" Seriously, I thought it was that. Too round?

3.141592653589793238...

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 88,714

Hi;

You are squaring the wrong numbers.

**In mathematics, you don't understand things. You just get used to them.**

**I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

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**mathaholic****Member**- From: Juliania
- Registered: 2012-11-29
- Posts: 2,870
- Website

*slaps myself*

3.141592653589793238...

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