Math Is Fun Forum

MathsIsFun

Administrator

Registered: 2005-01-21

Posts: 7,713

Normal Distribution

Made another page, what do you think?

Normal Distribution

Suggestions welcome.

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

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Normal Distribution

Hi;

The Quincunx is nice! It is easy to understand so you are done.

About the skewed data, left and right skewed have a strange meaning. Left skewed means the tail is on the left, yours shows it the other way around.

I do not why it is like that in statistics, to me your viewpoint is more intuitive but

http://en.wikipedia.org/wiki/Skewness

http://www.itl.nist.gov/div898/handbook … stogr6.htm

A quick fix is change the word skewed to bunched. Which is probably better for what you are trying to show.

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

MathsIsFun

Administrator

Registered: 2005-01-21

Posts: 7,713

Re: Normal Distribution

"Bunched" sounds nice!

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

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Normal Distribution

Hi;

Or batched ( batched? ), bunchy ( bunchy?) grouped, collected, condensed, conglomerated, amalgamated, aggregated, concentrated...

Better stick with bunched.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,621

Re: Normal Distribution

hi MathsIsFun,

I love it.  I've posted the link to some teachers I know. 

Quincunx still running.  HHmmmmm!  :)

Bob

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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
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

robinsonov

Member

Registered: 2011-07-01

Posts: 6

Re: Normal Distribution

Hi there i am new to this forum, my question is how do i post my questions to the forum?

Thanks
Robinsonov

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Normal Distribution

Hi robinsonov;

Welcome to the forum!

Go in the Help Me section and start a new thread there. Please read these guidelines.

http://www.mathisfunforum.com/viewtopic.php?id=14654

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

robinsonov

Member

Registered: 2011-07-01

Posts: 6

Re: Normal Distribution

Can someone help me with step by step solution to this decimal problem?
15/7         15 divided by 7

Thanks

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Normal Distribution

Hi;

Did you look here?

http://www.mathsisfun.com/long_division3.html

Lots of worksheets here.

http://www.mathsisfun.com/worksheets/division.php

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

robinsonov

Member

Registered: 2011-07-01

Posts: 6

Re: Normal Distribution

Hello there how are you guys doing?  i need more help with the solution to the below problems
Please if possible i would like to see the step by step solution to the problem.
Thanks
Robinsonov.

Convert the following fractions to decimals in   
1.0021=?

     __
1:201 =?

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Normal Distribution

Hi robinsonov;

Please start your own thread from now on in "Help Me" that way you will get faster help.

Here is how I do it. Start with the obvious fraction.

Now you have to get a whole number over another whole number.
If you moved the decimal point in 1.0021 four places to the right
you would have 10021 Whatever you do to the top of the fraction you have to do to the bottom. So

You can now make sure that it is in lowest terms.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

robinsonov

Member

Registered: 2011-07-01

Posts: 6

Re: Normal Distribution

Thanks  for your  kind effort.
bobbym

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Normal Distribution

Hi;

For the second one you have to use a trick.

1:201 =? I am assuming you mean 1.20101010101...

1.2 = 6 / 5 so

Let's work with the .0010101010...

Say:

Multiply both sides by 1000.

The .01010101010... is just 10 x.

Solve for x.

So that is your answer.

I leave the checking to you.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

robinsonov

Member

Registered: 2011-07-01

Posts: 6

Re: Normal Distribution

Thanks
bobbym

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Normal Distribution

Hi robinsonov;

Your welcome. I thought the second question is a little bit passed where you are. Or maybe I am missing something obvious, anyway that is how I do it.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.