Question

if the standard deviation is 3.5, the variance is what? 103.5 7 cannot tell from this data 12.25

Explanation:

Step1: Recall variance formula

Variance is the square of standard deviation, so $\text{Variance} = (\text{Standard Deviation})^2$

Step2: Substitute given value

Substitute standard deviation = 3.5 into the formula:
$\text{Variance} = 3.5^2$

Step3: Calculate the result

$3.5^2 = 12.25$

Answer:

12.25 (Option: 12.25)