How smart is Courtney Cox really? The Only Scientific Estimate Online

Dive into our analysis of Courtney Cox's estimated IQ, using established statistical methods and scholarly research.

For more celebrity IQ estimations, visit our celebrity IQ estimations page.

Courtney Cox

Courtney Cox

IQ: 118 ± 18

🔍 How Did We Calculate This?

Note: Courtney Cox's SAT score is 1150, which we used as the foundation for our IQ estimate.

1️⃣ SAT to IQ Conversion:

Using the formula IQ = 39.545 + 0.068 × SAT score, we estimated her IQ to be around 118.

2️⃣ Calculating the Standard Error:

The correlation between SAT scores and IQ is 0.8. To account for the unexplained variance (20%), we calculate the standard error (SE) using the formula SE = SD × √(1 - r²), where SD is the standard deviation of IQ scores (assumed to be 15) and r is the correlation coefficient (0.8). This results in a SE of approximately 9.

3️⃣ Determining the Margin of Error:

For a 95% confidence interval, the z-score is 1.96. The margin of error (MOE) is calculated using MOE = z * SE. Thus, MOE = 1.96 × 9 ≈ 18.

4️⃣ Final Result:

Adding and subtracting the MOE from the estimated IQ gives us the confidence interval. Therefore, Courtney Cox's IQ is estimated to be 118 with a 95% confidence interval of approximately 118 ± 18, which translates to a range from about 100 to 136.