Turn on thread page Beta
    • Thread Starter
    Offline

    12
    ReputationRep:
    When to use Continuity Correction in Normal Distribution?
    I am confused. Please make it clear.
    Offline

    11
    ReputationRep:
    (Original post by kundanad)
    When to use Continuity Correction in Normal Distribution?
    I am confused. Please make it clear.

    You apply continuity corrections when using a continuous distribution (typically the normal distribution) as an approximation for a discrete distribution (typically the binomial or Poisson distributions). The need for these corrections arises because:

    * In the continuous world, 5 means 5
    * In the discrete world 5 means anything in the interval 4.5 =< a < 5.5

    If struggling with this concept, please post an example question and your attempt at answering it.
    • Thread Starter
    Offline

    12
    ReputationRep:
    (Original post by old_engineer)
    You apply continuity corrections when using a continuous distribution (typically the normal distribution) as an approximation for a discrete distribution (typically the binomial or Poisson distributions). The need for these corrections arises because:

    * In the continuous world, 5 means 5
    * In the discrete world 5 means anything in the interval 4.5 =< a < 5.5

    If struggling with this concept, please post an example question and your attempt at answering it.
    Thats clear. Thank you
    We can use it when mean and sd is not given only n and prob, so we have to find both and then use continuity correction for the given value. Is that right?
    • Thread Starter
    Offline

    12
    ReputationRep:
    (Original post by old_engineer)
    You apply continuity corrections when using a continuous distribution (typically the normal distribution) as an approximation for a discrete distribution (typically the binomial or Poisson distributions). The need for these corrections arises because:

    * In the continuous world, 5 means 5
    * In the discrete world 5 means anything in the interval 4.5 =< a < 5.5

    If struggling with this concept, please post an example question and your attempt at answering it.
    Also
    https://www.thestudentroom.co.uk/sho...8#post74015098
    Can you help me out on this question as I am really confused. Thank you
    Offline

    11
    ReputationRep:
    (Original post by kundanad)
    Thats clear. Thank you
    We can use it when mean and sd is not given only n and prob, so we have to find both and then use continuity correction for the given value. Is that right?
    Let's say we have a random variable X with Poisson distribution, and that we wish approximate X with a new random variable Y that has normal distribution. Consider what happens when we try to use the approximation to find the value of P(X = 5). We can't simply map P(X = 5) to P(Y = 5) because P(Y = 5) = 0. To get round this fundamental problem, we apply a continuity correction and map P(X = 5) to P(4.5<= Y < 5).
 
 
 
Poll
Should predicted grades be removed from the uni application process
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.