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Nottingham Building Society - 1.55% Instant Access Account

1246710

Comments

  • soulsaver
    soulsaver Posts: 6,747 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    edited 30 October 2018 at 2:13PM
    Not even close:

    36B/50k = 1 in 720k chance.

    At the start, 12 goes = 1 in 719988 chance; last go is 1 in 720K.

    1 in c.60k is the odds if you had 600k bonds at one go ie 36B/(12x50k) and that clearly isn't the case.
  • jrsga
    jrsga Posts: 93 Forumite
    soulsaver wrote: »
    Not even close:

    36B/50k = 1 in 720k chance.

    At the start, 12 goes = 1 in 719988 chance; last go is 1 in 720K.

    1 in c.60k is the odds if you had 600k bonds at one go ie 36B/(12x50k) and that clearly isn't the case.


    Then M. Lewis and his analysis is incorrect?
  • soulsaver
    soulsaver Posts: 6,747 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    jrsga wrote: »
    Then M. Lewis and his analysis is incorrect?

    c.60k:1 is incorrect by a country mile. I don't know how you came to it.
  • darren72
    darren72 Posts: 1,310 Forumite
    Part of the Furniture 1,000 Posts Combo Breaker
    colsten wrote: »
    I'm having some fun and games with them. My application went through alright, as did the original deposit. However, they are unable to send me my login details as GMAIL apparently blocks all emails from Notts BS. Calling them is a bit of a hit and miss - I have been cut off mid-call three times now.

    I used to have accounts with them before and they were fine then, so I am still sticking with them for now.

    I signed up yesterday with them - had no problems receiving my login details via my Gmail account.
  • eskbanker
    eskbanker Posts: 38,037 Forumite
    Part of the Furniture 10,000 Posts Name Dropper Photogenic
    soulsaver wrote: »
    c.60k:1 is incorrect by a country mile. I don't know how you came to it.
    The number is sourced from https://www.moneysavingexpert.com/savings/premium-bonds-calculator/, where it's explained that:
    The underlying probability calculations behind this easy-to-use tool were designed by a post-doctoral cosmology statistician. Each month it runs for six hours, just to calculate the new odds!
    soulsaver wrote: »
    Not even close:

    36B/50k = 1 in 720k chance.

    At the start, 12 goes = 1 in 719988 chance; last go is 1 in 720K.

    1 in c.60k is the odds if you had 600k bonds at one go ie 36B/(12x50k) and that clearly isn't the case.
    The latest figure for winning £1m with a £50K holding in a single draw is 1 in 767,747.

    For a run of 12 independent draws with a £50K holding, simply dividing by 12 is a perfectly workable approximation when working with numbers of this order of magnitude - 12 in 767,747 is 1 in 63,979 but I have no reason to doubt the modelled figure of 1 in 63,093. Or to put it another way, if you're asserting that this is "incorrect by a country mile" then perhaps you'd like to put forward a figure that you believe is accurate, with some idea of your workings?
  • mersey
    mersey Posts: 1,298 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    Up and running,no problems.
  • londoninvestor
    londoninvestor Posts: 1,351 Forumite
    Sixth Anniversary Combo Breaker
    edited 30 October 2018 at 6:39PM
    eskbanker wrote: »
    For a run of 12 independent draws with a £50K holding, simply dividing by 12 is a perfectly workable approximation when working with numbers of this order of magnitude

    Yep. Strictly, the chance of winning £1m at least once in a year is:

    1 - (probability of NOT winning £1m in the year)
    = 1 - (probability of NOT winning £1m in 12 independent draws)
    = 1 - (1-n)^12 , where n is the chance of winning £1m in each draw
    = 12n + 66n^2 + terms in n^3 and above

    If n=1/767,747 then:

    12n = 0.00001563015 = 1/63,979
    66n^2 = 0.000000000111972: which makes almost no difference
    ...and the higher-order terms are even more negligible still.
  • stepea
    stepea Posts: 12 Forumite
    if I've got 5k sitting in a current account, is it worth moving to something like this.
  • darren72
    darren72 Posts: 1,310 Forumite
    Part of the Furniture 1,000 Posts Combo Breaker
    stepea wrote: »
    if I've got 5k sitting in a current account, is it worth moving to something like this.

    It depends which bank you are with and what interest rate they pay on credit balances...
  • stepea
    stepea Posts: 12 Forumite
    darren72 wrote: »
    It depends which bank you are with and what interest rate they pay on credit balances...

    bank = nat west
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