[gameman144]

In this scenario, you should expect to have a representation of around 1 woman per 4 men, if the rate of qualified candidates is 1 woman per 4 men. If you want to hire more than that ratio, you have to be doing some discarding of otherwise qualified candidates on the basis only of being men.

[pygar]

Sure. But even if you want to hire at about 1 women per 4 men you would need to actively do so. I.E. create a hiring policy in which she would be selected instead of one of the other equally qualified men.

[gameman144]

Not at all! Passively choosing from the equally-qualified-candidate distribution across the board will yield representation that's right in line with that distribution.

There may be some groups that are entirely men and some that are entirely women, but the aggregate result will approach the true population of qualified candidates.