effect of repeats on errors Watch

Wippydip
Badges: 0
Rep:
?
#1
Report Thread starter 10 years ago
#1
For some reason I have a belief in my head that repeating results and averaging them decreases the percentage error. Is this right? or am I so tired that I am thinking and talking rubbish.
This is for my A2 coursework in for tomorrow by the way so any help much appreciated!!
0
quote
reply
gilbo
Badges: 2
Rep:
?
#2
Report 10 years ago
#2
repeats will minimise anomalies and random error.

it will not eliminate systematic error i.e apparatus error
0
quote
reply
Wippydip
Badges: 0
Rep:
?
#3
Report Thread starter 10 years ago
#3
Thanks! Is there a specific factor, like two sets of results halves random error, three sets divides it by three, or is it just it decreases it by an unspecified amount?
0
quote
reply
gilbo
Badges: 2
Rep:
?
#4
Report 10 years ago
#4
The more the repeats the less the error, but each result has a different error depending on the procedure so no there is not a specified amount.

Advised is a minimum of 5 repeats. also mention repeat until 2 concordant results i think thats 2 with 1% of each other or something
0
quote
reply
X

Reply to thread

Attached files
Write a reply...
Reply
new posts
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

University open days

  • University of Lincoln
    Brayford Campus Undergraduate
    Wed, 12 Dec '18
  • Bournemouth University
    Midwifery Open Day at Portsmouth Campus Undergraduate
    Wed, 12 Dec '18
  • Buckinghamshire New University
    All undergraduate Undergraduate
    Wed, 12 Dec '18

Do you like exams?

Yes (140)
18.52%
No (459)
60.71%
Not really bothered about them (157)
20.77%

Watched Threads

View All