Does anyone know the formula used to calculate the bankers offer in Deal or No Deal?

Apparently, for the NBC Version online, the formula is based on the average of the "big" numbers and the average of the "small" numbers as follows:

“Big” $ values are $100,000+

All others are “small” $ values.

In the formulas below "big" represents the sum of the remaining "big" dollar amounts.

"Small" represents the sum of the remaining "small" dollar amounts.

EV is the "expected value" of the remaining dollar amounts.

(Sum of all the dollar values divided by the number of remaining values)

When there are 20 cases left the offer is .0077*big + .07*small.

(.154 * EV of big + 1.4 * EV of small)

When there are 15 cases left the offer is .0144*big + .09*small

(.216 * EV of big + 1.35 * EV of small)

When there are 11 cases left the offer is .0273*big + .13*small

(.3003 * EV of big + 1.43 * EV of small)

When there are 8 cases left the offer is .0442*big + .17*small

(.3536 * EV of big + 1.36 * EV of small)

When there are 6 cases left the offer is .062*big + .2*small

(.372 * EV of big + 1.2 * EV of small)

When there are 5 cases left the offer is .1025*big + .25*small

(.5125 * EV of big + 1.25 * EV of small)

When there are 4 cases left the offer is .1683*big + .33*small

(.6732 * EV of big + 1.32 * EV of small)

When there are 3 cases left the offer is .305*big + .5*small

(.915 * EV of big + 1.5 * EV of small)

When there are 2 cases left the offer is .355*big + .5*small

(.71 * EV of big + EV of small)

On the programme i've found a very good rule of thumb is to add up all the money left to win, divide by the number of boxes left to get the average amount the person is going to win, then the banker will consistently offer around 15% less than that figure. Try it yourself.

If a formula is used it would probably be the binominal distribution formula which would provide the exact odds of the person winning a specific amount. It is actually better for the banker to be overly generous as this creates more viewer interest which is what the sponsors of the show are seeking.

it's logic mostly.all you do is add the remaining amounts together,divide that by the remaining boxes and this is your average amount,but of course the banker never offers you that anyway.i'm pretty good at guessing the amounts anyway,if you don't take out 1 of the power 5 in the first round you get an offer of about £8,500,but if you do you'll only get about 5 grand.try it yourself it's pretty easy.i don't think there is a formula to it,just c4 being as stingy as they can.lol

I expect it is the average of the boxes left in play, reduced slightly.

On the actual TV show, it is generally slightly below the average, the amount depends on the bankers 'read' on the person and how little he can offer.

I don't think there is any formula. If the banker like someone he always find the way to give him good money.

I think there's an element of bluff in it. Tonight I saw an offer of just 11 cents!

there is none, teh guy up in the box "the banker" makes a deal lower then what your average is, and he makes you one that you coulnd't resist, or tries. and he also makes u panic. its his job

I dunno...maybe its a percentage of what the chances are that the box you have is the high paying one?

I guess it's just using your common sense to work it out.