Question

Please help me!!!!

Answer 1

I need help finding the average percent error!

Answer 2

This is my question, What was your average percent error for all three trials?

Answer 3

Yeah.. I'm still lost

Answer 4

lol

Answer 5

@rational

Answer 6

I"M DESPERATE

Answer 7

LOL

Answer 8

Just as what @iambatman did
\[\Large \left| {\frac{approximate~value-exact ~value}{exact~value}}\right|*100~percent\]

All you have to do is determining your aprox values which are 339 i believe and i think the exact value should be given to you..Are there any exact values given?

Answer 9

I don't think so..

Answer 10

I'm a little confused on how you would do that for my question????

Answer 11

Could someone do one for me and describe the steps?

Answer 12

The approximate value is YOUR measured value. So whatever you've measured, that represents your approximate. That is why i mentioned 339 as your approximate value. Since your the enthalpy fusion for each trial is 339, then the measured/approximate value is 339 for each trials. The exact value, on the other hand, should be given to you.

If you're familiar with actual yield and theoretical yield from stoichiometry, the theoretical yield comes from the exact measurements without any lab mistakes, it indicates how much product should be formed but the actual yield comes from the person's OWN measurement. Think of the approximate value as your actual yield, and the theoretical as your exact value.

\[\left| \Large\frac{Actual ~yield}{Theoretical~yield} \right|*100=Percent~yield\]

Now, back to our case. Since we are not dealing with stoichiometry and percent yield, we are only looking for \(\color{red}{percent ~relative ~error}\). T

To calcul

Answer 13

To calculate the percent relative error, we only need to take the difference of exact and approximate value and divide all by the exact value.

Answer 14

But I'm confused on if I'm supposed to do that to all my calculations? @Zale101

Answer 15

@Zale101

Answer 16

Yes to all your calculation.

Answer 17

But there has to be one exact value given

Answer 18

I am deeply confused..

Answer 19

can you take a screen shot of your question?

Answer 20

This was the question! What was your average percent error for all three trials?

Answer 21

And the photo is above!

Answer 22

the photo just states measurements and calculations

Answer 23

That's all I got... That is the question for the chat...

Answer 24

For the chart*

Answer 25

ask me what average percent error is

Answer 26

Do you think there should an exact value given? @freethinker
helpmee says she doesn't have it

Answer 27

I have giving you guys all the info I have...

Answer 28

The question needs to have the difference between aprox value and exact value all divided by exact value, times 100%. That is the percent error.

Answer 29

this question does not require approximate value
average percent error pertains to what is always discussed in chemistry and physics when significant numbers are involved

Answer 30

that should give you all the clue you need :)

Answer 31

how are you going to calculate that?

Answer 32

without approximate value and exact value, how are you going to calculate the average percent error then x.x

Answer 33

I am so brain dead right now.. I need someone to give me an example or something. Maybe walk me through it if you're super nice..