Affordable Housing. Families who pay more than 30 percent of their income for housing are considered cost burdened and may have difficulty affording necessities such as food, clothing, transportation and medical care.
But, besides the data of an average man, we all would want to know what is the highest rating of IQ ever recorded? Well, there are many people, but one of them is, William James Sidis, holding the world's highest score till date, with a figure of 250 above.
As for your question, from the definition (as explained above) there really is no theoretical 'upper limit'. But, in practice, IIRC the highest IQ score ever recorded (200+) was for a Korean child of about 8 or 9 years of age. Also, an IQ score of more than about 140 or so usually doesn't mean much. That is, a person with an IQ of 170 may or may not be smarter than someone with an IQ of 150 on the same test. HTH Doug.