She doesn't remember the mean or the standard deviation, but she does remember that the first and third quartiles are 500 and 600. the standard deviation of sat verbal scores is closest to

The standard deviation of SAT Verbal scores is 74.07 which is closest to 75

Step-by-step explanation:

Given that:

Using quartile equations:

Adding (1) and (2)

Inserting in (1) or (2)

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.