How Do You Calculate Percentage Error in Period Measurements?

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Homework Help Overview

The discussion revolves around calculating the percentage error in period measurements related to a recording timer that produces dots over a specified time interval. The original poster presents two parts to the problem: calculating the period based on the number of dots and time, and then determining the percentage error compared to a given actual period.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the calculation of the period from the timer's output and the subsequent calculation of percentage error. There is an emphasis on showing working steps and clarifying assumptions about the calculations.

Discussion Status

Some participants have provided feedback on the calculations, with one suggesting that the percentage error calculated as 91% may not be correct. There is an ongoing exploration of the correct method to find the percentage error, with hints about taking the difference between calculated and actual values.

Contextual Notes

Participants express varying levels of confidence in their calculations, with some indicating a lack of experience in the subject matter. There is a mention of needing to show working steps to facilitate understanding and verification of results.

cowking
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Help please you all can do this

i am a noob at this here it is


1. Arecording timer makes 465 dots in 8.5s

(A) calculate its period . i have this but i don't know (B)
(B) Its actual period is 0.020s. calculate the percentage error


we are using the T=sec
----
cycles
i am a noob at this
 
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cowking said:
i am a noob at this here it is
First rule, then: show some working...
 
sorry i am not a pro like you but i suck at this but thjx for the help ass and i think it is 91 % but i am not 100%
 
You could at least show what you have for A

btw: 91% is right - what's your working?
 
thx man so 91 % is right kewl sorry for calling you a ass it sounded like you where being one
 
Last edited:
cowking said:
thx man so 91 % is right kewl sorry for calling you a ass it sounded like you where being one
:biggrin:

That's OK - I've just woke up :biggrin:
 
Actually, 91% isn't the percentage error.

You're on the right lines tho' - if you got the 91%, you've got A, I presume...

Now take the difference between your vale of A and the actual value given, then work out the percentage error
 

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