Why should IQR be used to measure spread in skewed data instead of standard deviation?
Select a Value

•IQR is easier to calculate
•Standard deviation doesn't measure spread
•IQR is resistant to skew and outliers
•Standard deviation is resistant to skew and outliers

one that is bigger than 3 1/2

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.