Predicting the Arrival of Baby Bunny

Today I discovered a new due date calculator on the internet. The data for the algorithm is based off of user-submitted birth, conception, and menstrual period information. Here are my results:

Estimated birth weight of your baby is 7 pounds, 10 ounces

True due date: Wednesday December 24th, 2014 when you are 39 weeks, 4 days pregnant

There is an 80% chance your baby's birth weight will be between 6 pounds, 7 ounces and 8 pounds, 13 ounces

Most likely week (27% chance): Monday December 22nd, 2014 to Sunday December 28th, 2014

Fifty percent chance of being born: Wednesday December 17th, 2014 to Tuesday December 30th, 2014

Eighty percent chance of being born: Tuesday December 9th, 2014 to Tuesday January 6th, 2015