According to the stanford-binet formula for an intelligence quotient (iq), the iq of a ten-year-old child with a mental age of eight and a half years

85

Explanation:

Hello! Standardized tests such as the Stanford-Binet intelligence quotient are performed to calculate “mental age”. To calculate it correctly the steps of a formula are followed, divided and multiplied to arrive at the result. In this way, the test has the child's number.

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