Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
    • Thread Starter
    Offline

    0
    ReputationRep:
    Hi guys, I am confused what to write for this question... Pls someone help me with this:

    explain why a sampling approach is used and define what constitutes an unbiased sample.

    thanks in advance
    • Study Helper
    Offline

    3
    ReputationRep:
    Study Helper
    (Original post by Katieha)
    Hi guys, I am confused what to write for this question... Pls someone help me with this:

    explain why a sampling approach is used and define what constitutes an unbiased sample.

    thanks in advance
    Well it depends. Is is random, systematic, stratified, convenience, judgement based, using quotas, using snowballs.... all have different uses.

    Unbiased - 'An unbiased (representative) sample is a set of objects chosen from a complete sample using a selection process that does not depend on the properties of the objects' - Wikipedia. The real questions [email protected]
    is an unbiased sample a good thing? - depends may be too difficult/time consuming to collect
    can you correct for bias? - yes in some situations.
    • Thread Starter
    Offline

    0
    ReputationRep:
    (Original post by tombayes)
    Well it depends. Is is random, systematic, stratified, convenience, judgement based, using quotas, using snowballs.... all have different uses.

    Unbiased - 'An unbiased (representative) sample is a set of objects chosen from a complete sample using a selection process that does not depend on the properties of the objects' - Wikipedia. The real questions [email protected]
    is an unbiased sample a good thing? - depends may be too difficult/time consuming to collect
    can you correct for bias? - yes in some situations.
    Thank you


    Posted from TSR Mobile
    • Study Helper
    Offline

    3
    ReputationRep:
    Study Helper
    (Original post by Katieha)
    Thank you


    Posted from TSR Mobile
    no problem
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: January 14, 2015
Poll
Do you like carrot cake?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.