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/sci/ - Science & Math

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12281498 No.12281498 [Reply] [Original]

I it possible to learn basic statistics in a couple of hours?

>> No.12281501

Not on /sci/

>> No.12281509

statistically unlikely

>> No.12281597

I used my statistical prowess to calculate that yes, it is possible. Not for you though.

>> No.12281605

>>12281498
Just learn how to calculate central tendency and dispersion parameters. Its too late for the rest.

>> No.12281616

>>12281498
Bro just add everything together and divide by the number of things. Boom, stats in 5 seconds.

>> No.12281633

Mean:
[eqn]
\bar{x} = \frac{1}{N} \sum_{i=1}^{N} x_i
[/eqn]

Variance:
[eqn]
\sigma^2 = \frac{1}{N} \sum_{i=1}^{N} x_{i}^{2} - \bar{x}^2
[/eqn]

Standard Deviation:
[eqn]
\sigma = \sqrt{\frac{N}{N-1} \sigma^2}
[/eqn]

>> No.12281665

>>12281633
abhorrent notation and abhorrent definitions. Go hide

>> No.12281689

>>12281509
lol

>> No.12281719

>>12281665
why? it worked fine for my undergrad physics lab classes

>> No.12281746

>>12281719
>mean
No, physics dude. Thats not the mean. That's called sample average.

>variance
No, physics dude. That's not the variance. That's the sample squared deviation from the mean. It's a biased estimator of the variance. You simply dont use that.

>standard deviation
No, dude. Thats the sample standard deviation. You dont use sigma. What if you square it? Do you get your 'variance'? Abhorrent.

>> No.12281760

>>12281746
>physics dude
Every physicist worth his salt knows what first and second moments are and their relation to moments of inertia or moments of area in structures.
That guy had a physics undergrad class, he's likely an engineer or biologist or chemist.

>> No.12281771
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12281771

>dunche
what does it mean?

>> No.12281882

>>12281498
Just google normal distribution and z-scores

>> No.12281929

Is it possible to learn linear algebra in a weekend?

>> No.12281939

>>12281498
https://www.youtube.com/watch?v=xxpc-HPKN28

>> No.12281988

>>12281746
OP said basic statistics, retard

>> No.12282014

>>12281498
No

>> No.12282020

>>12281498
It's 50/50, either you can or you can't.

>> No.12282026

>>12281498
>is it possible to learn how to play the piano in a couple of hours?