Birdies

With good lighting and proper diet, 1 per day is what you should expect.

1 egg per day in the summer
1 egg every other day in the winter

A hen's reproductive cycle generally lasts twenty-four hours during the summer months. Her cycle is set by day length. As the days shorten, and winter approaches, a hen will lay fewer eggs, skipping some days. Some hens stop laying eggs all together until the spring arrives. The reason behind this is that winter is a bad time to raise chicks. The cold weather decreases a chicks chance of survival

During fertile times chickens will lay 1 per day unless they accumulate to three or four then then will stop laying them

5-8

It depends on the breed of the chicken, its age, the temperature, the amount of sunlight, and probably things like the earth's magnetic field and the alignment of Venus and Mars.

But, out of 15 chickens you'll probably get 12 eggs a day http://www.byexample.com/homestead/livestock/egg_laying_chickens.html

the average hen produces one egg per day. they are a lot of work and if you don't plan on eating them, you have to keep them because you love them.

the upkeep and food is more than the price of a dozen eggs.

I think one a day.
Hope this really helps.
:)