Answer :
Final answer:
Edie's Intelligence Quotient (IQ), calculated according to the original Stanford-Binet IQ scale, is 125. The IQ was calculated using her mental age of 10 and her chronological age of 8.
Explanation:
The Intelligence Quotient (IQ) is calculated by the formula [Mental Age/Chronological Age] x 100. In Edie's case, she is 8 years old, but she responds with proficiency of an average 10-year-old child. Therefore, her IQ would be calculated as follows: [10/8] x 100 = 125. So, Edie's IQ is 125 according to the original Stanford-Binet IQ scale.
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