Introduction to experiment design | Study design | AP Statistics | Khan Academy

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Introduction to experiment design. Explanatory and response variables. Control and treatment groups.
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AP Statistics on Khan Academy: Meet one of our writers for AP¨_ Statistics, Jeff. A former high school teacher for 10 years in Kalamazoo, Michigan, Jeff taught Algebra 1, Geometry, Algebra 2, Introductory Statistics, and AP¨_ Statistics. Today he's hard at work creating new exercises and articles for AP¨_ Statistics.
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[@languageandmana9255]

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[@jaredcommey9749]

Thank you you helped me understand this better

[@RajkumarYadav-vo3sq]

i have been following your mathematics solutions since long , it is very helpful and easy to understand ...........can you please help with design of experiment with 4 factors ( 1. peak current (not continuous) 2. Arc-sensitivity (continuous) 3. Duty factor (continuous) 4. pulse on-time (continuous) .................with each of 5 levels ...(AND WITH A LIMITED NUMBER OF RUNS)
........ your response is much appreciated. thankyou.

[@muskanjain869]

factorial design it should be.

[@BritneyFreak34812]

Everytime I find a Khan Academy video and hear Sal.. I already know he's just going to repeat sentences constantly

[@moeed5554]

ikr? lol

[@derekcoiner346]

repeat sentences constantly... repeat... sentences.... constantly. Okay so he's going to repeat sentences constantly and the thing is.... it's weird.. okay, it's weird. but you're going to learn it... you're... going... to learn... this... material.

[@michellenasrudin9515]

can you get this lecture in Swedish in any way? would be so good.

[@_Zainab_Fatimah]

Hello, please one video for " how to find unreasonable experimental design in a published science paper" please please

[@sarahwoody8076]

I'll miss you Khan.

[@janalrussela.gonzaga2694]

this is for my class

[@maxmaximum10]

Would it be possible in an experiment such as this to use people as their own controls? Such as giving a placebo for the first stage, recording their A1c, then when giving the next set of drugs swap in the test drug, and compare results between the two stages. If this was feasible it'd remove the need for blocking, with confounding variables less about individual differences which can be difficult to account for, and more about any changes that may occur over time between the two stages. Just spitballing though, I imagine there's a reason we don't tend to do this!

[@dr.adoriwinchester2107]

Yes it’s possible to do this kind of study it’s called (before and after trial using historical controls) but the problem of this study would be that the improvement noticed may simply be because of other patient management techniques , may also have improved recently or else because the data collected earlier was incomplete or erroneous .

[@lenleib2673]

This looks like it might be good for an AP Statistics Class :)

[@mitchellsteindler]

As far as I remember, experimental design wasnt part of AP stats

[@cloudlie3338]

@@mitchellsteindler it is, I am pretty sure that's what this video is for.

[@xma3559]

Good one

[@congocargologisticsingoma924]

Thank you helpful

[@bryanq2843]

Thanks mate, it really helped a lot :D

[@mansimalegaonkar346]

Great video

[@gouravgosain7317]

How does he know everything?maths science history...

[@theo.g1462]

that's what I'm saying lmaooo

[@ngcynonyii4433]

Because they are similar

[@advaitmishra2992]

saved my life

[@mugimbaisaac6541]

wat do i do to get lectures in order

[@maheshjawale6392]

very well explained

[@theboomsquad4582]

Let's go

[@cusescholar3582]

Your idea of replication is wrong! Replication is ensuring that we have a sufficiently large sample size, not repeating the experiment.

[@asifchattha9822]

Are u from Pak

[@BrandonSpaceHero]

Aww man!

[@potatochipchloe9174]

First view and comment

[@theboomsquad4582]

Second

[@spicyjia6217]

If Ranboo was a teacher:

[@slader5357]

God bless in Jesus name

[@gamerz11011]

First

[@languageandmana9255]

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