as/a2 chem & bio isa discussion Watch

streetpharmacist
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any help?
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QuidditchFan
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(Original post by streetpharmacist)
any help?
I would think before answering, revise any specific terminology for that topic and also look at words such as "reliability, accuracy, precision, validity" etc and ensure that you know what they mean. Hope this helps!
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thestudent_09
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(Original post by QuidditchFan)
I would think before answering, revise any specific terminology for that topic and also look at words such as "reliability, accuracy, precision, validity" etc and ensure that you know what they mean. Hope this helps!
I get really confused with the difference between them. can you please help?

for example i am talking about using an optics bench instead of a ruler for the diffraction grating experiment. I have to comment on why i have chosen the optics bench and ruler. but I'm getting accuracy, validity, precision and reliability.

i know I'm talking about physics atm but i have no idea who to go to!!!
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