Question

What is the criteria for calculation of IQ ?

Answer 1

Well, it's not quite as easy as you might think, unless you are a psychologist. What psyhologists do when they wish to calculate one's I.Q is this:

1. First they make tests with a great variety of questions, depending on the age of the person they're testing. Ex. If they're testing a 10-year old, they'll compile questions that would be suitable for a nine-year-old, ten, and eleven-year-old.
2. So, after the test's been done, they examine it and see which questions are answered. Let's say that the 10 y.o. boy has answered all the questions for the nine y.olds and all of the questions suitable for his age, but he has not answered even one of the "11-year olds" questions. Then we can say that his mental age is equal to his caldendar age, which is shown in the formula:

I.Q.= MA / CA x 100
MA - mental age
CA - caldendar age
So, in our example, I.Q. = 10 / 10 x 100
I.Q = 100

If the 10 y.o.boy had solved all the eleven-year old questions,

I.Q. = 11 / 10 x 100
I.Q = 110

Anyway, like I said before, you can neither compile the questions nor evaulate the results unless you are a very skilled psychologist. So if you want to have it calculated, ask for a proffessional to help you with this matter.