What is the average IQ of a 15 year old?

Question

My sisters is -45... jk, its positive. haha

Answer 1

An IQ of 100 is average for all ages, as age is a factor when calculating results.

Answer 2

100 is average

Answer 3

I would see something around 100

The problem is finding any reliable Free IQ tests on the internet that even give you your IQ back.  

On the test the nation when i was 13 i had an IQ of 154 but i didn't even fit the age scale so was probably higher

Answer 4

For all ages:

Scores between 90 and 109 are considered "average" according to the Weschler testing material.

EDIT:  Thumbs down on a research institute?  You really must be smart then.

Answer 5

if ur sister had an IQ  of 45 i think she would be in a helpless state, the average IQ of the world is 100, mine is 133.