Probability of third child being male

Question

Can anyone help me out here? If I already have two daughters what if the probability of third child being male? I want to compare and share scientific and mathematical facts with old school folk taled family members.

Answer 1

About 50%.

Answer 2

50/50

Just like any coin flip there is no correlation from previous outcomes to future outcomes.

Unless your sperm are different somehow.

Answer 3

Its 50/50 regardless of how many children you have.

d**n. And you procreating?

Answer 4

Somebody told me that there was a 75% of a third child being of the same gender as the first two, but I don't know where that came from. It seems to be a fact that certain couples produce one particular gender, in which case there would not be a 50-50 chance as other answerers have said. On the other hand, I have read that if intercourse takes place early in ovulation, this favours a male child and if it takes place later in ovulation, the result is more likely to be a female child because of the relative speed at which the spermatozoa move. It is difficult, of course, to test these various theories.

Answer 5

There is a well-written presentation of the data in the link below:

As you can see from two "Previous Children" tables fairly far down

in the article, the odds of the third child being the same gender as

the first two are:

First two are boys -- Odds are 53.3% the third will be a boy, vs 46.7%

it will be a girl

First two are girls -- Odds are 54.0% the third will be a girl, vs

46.0% it will be a boy

Thus, there is a shift from the usual pattern of births, which is 51%

boys, 49% girls.  The shift is fairly small, but noticeable just the

same.

Answer 6

For every child you have there is 50% chance that it will be a girl and a 50% chance that it will be a boy. Whether or not you had all girls or all boys does not affect that probability.  

Answer 7

First we must assume that each pregnancy produces one child.

then we can say that each possibility is worth 25 %

since there are really only 4 possibilities.

that is:

a) 3 Girls

b) 3 Boys

c) 2 Girls +1 Boy

d) 2 Boys +1 Girl

Since u can only fall into conditons a) or c) [do not forget what we assumed] then there really is a 50% chance you will get a boy or girl.

Now if you were childless, getting 2 girls and one boy would be c) 25% possible.

wow i cant believe i wrote so much on this.

Answer 8

you've provided insufficient data to answer this question.

the probability isn't dependant on the how many children of what types have been born to you already, nor is it 50-50.  (if it were then birth rates for males and females would be equal worldwide.)  what you need to know is what is the frequency of male children typically born to the father's family.  this will determine how probable his y gene will be passed on.