Statistics: Standard Deviation

Review of what we've learned. Introduction to the standard deviation.

Category:

Education

Tags:

• statistics
• standard
• deviation
• variance
• CC_6_SP_5_a

[ishouldbesleeping0]

CSU tuituion $2200

Actually learning Stats in a Youtube Channel.....FREAKING PRICELESS!!!!

[TheSteelArmor]

I am replacing my prof with this guy :)

[darkphantom28]

28 professors don't like this guy.

[TheSjs92]

@CanEHduh88 Public library = free. :P

But aside from that college is a valuable experience (though the value has gone down over the past several years or so.) and will give you such a degree that will get you in the door for job prospects. It's highly encouraged that anyone that is capable to at least go to a community college use these resources as supplementary, because although these are helpful it's best to have a textbook and work problems out to better learn.

[megafighterking]

i fukin love u

[Levienkhoma]

@CanEHduh88 OMG the cost of all that is very negligible. This is best value for Youtube. I am totally in love with youtube maths.

[CanEHduh88]

@ishouldbesleeping0 Well if you want to get technical its actually (cost of your computer) + (internet fees) + (electrical bills) =

a hell of a lot more then your tuition

;) ahahah

[MystyrNile]

@BABAMUMBU You may be able to do something like that with a spreadsheet program on the computer, or something.

[MystyrNile]

@likhavel Look up Bessel's correction on Wikipedia.

Imagine you have a population of numbers.

You take just a few numbers from that population.

What if you just so happened to pick some of the smaller of the population?

If you did that, then the average that you got would be biased, because the average you got was BASED ON those small numbers, thus making your average small, too.

Using a smaller denominator makes a larger quotient, enough to remove the bias towards the sample population.

[Mesosmartical]

I pay $22,000 a year in tuition to learn Stats on Youtube.  ugh life!

[BABAMUMBU]

Ihave to calculate a data set with 100 numbers, there are some numbers that are repeated many times, is there a shortcut to input the number of times that a number is repeated in my TI-89 calculator, EX: I input in my TI-89 variance({61, 61, 61, 61, 61, 61 ,61, 63, 63, 63, 63, 63, etc}) is there a symbol to make life easier to repeat the number x amount of time? EX: variance({61(symbol(amount of times to repeat the number)), 63(symbol(amount of times to repeat it)), etc}) ?