Kassandra observed that the range in her monthly grocery bills was $150 The standard deviation was $45 , and the IQR was $65 Based on these measures of spread, which of the following statements is true?
Answer
A
Half of the months, Kassandra had grocery expenses that differed by 150 dollars.
B
The middle 50 percent of the months, Kassandra's expenses varied by 65 dollars.
C
Kassandra's average monthly grocery bill was 150 dollars.
D
Kassandra's monthly grocery expenses vary by exactly 45 dollars each month.