Calculate the quartile deviation of the following frequency distribution for the number of valentine cards by certain bookstore within 60 days before feb. 14 Document Preview: How to calculate the Q1...

Calculate the quartile deviation of the following frequency distribution for the number of valentine cards by certain bookstore within 60 days before feb. 14


How to calculate the Q1 if the problem is like this : Calculate the quartile deviation of the following frequency distribution for the number of valentine cards by certain bookstore within 60 days before feb. 14 # of cards 10-18 1 19-27 3 29-36 4 37-45 7 46-54 12 55-63 13 64-72 13 73-81 7 82-90 3 91-99 1 N= 64