I'm still confused with validity and reliability (1 Viewer)

[iwannaacetheHSC]

In an experiment, if i get asked a validity question, what type of answer should i be looking for in general( like control, variables etc.). Normally I just ramble on about complete bullshit but i wanna change that

 

[b3kh1t]

I look at it like this; validity is how valid the result is, so is it close to what the correct answer is, for example the heat of combustion, is the heat of combustion close to the known value. Reliability is how reliable your experiment is and it becomes more reliable when you repeat it numerous times.

 

[someth1ng]

Yeah, validity is how well the experiment determines the required value (or how well it does its purpose) - ie To find the molar heat of combustion of Ethanol. The reliability is how trustworthy those results are if someone repeated your experimental method.

 

[rawrnerozero]

Reliability: If someone else did the same experiment, they would get the same result. You evidence will be more reliable if you repeat readings.

Validity: The experiment has to be reliable and relevant to the question which makes sense.

 

[iwannaacetheHSC]

THNX guys