Median problem

nisha.menon294 wrote:In which class interval does the median score of the 73 students that appeared for an exam co - incise with ?

scores obtained ----------------- No: of students___cumulative frequency
50-59 ------------------ 2___2
60-69 ------------------ 10___12
70-79 ------------------ 12___24
80-89 ------------------ 27___51
90-99 ------------------ 21___72

Options
a)60-60
b)70-79
c)80-89
d)cannot be determined

nisha.menon294 wrote:In which class interval does the median score of the 73 students that appeared for an exam co - incise with ?

scores obtained ----------------- No: of students
50-59 ------------------ 2
60-69 ------------------ 10
70-79 ------------------ 12
80-89 ------------------ 27
90-99 ------------------ 21

Options
a)60-60
b)70-79
c)80-89
d)cannot be determined

harshavardhanc wrote:

nisha.menon294 wrote:In which class interval does the median score of the 73 students that appeared for an exam co - incise with ?

scores obtained ----------------- No: of students
50-59 ------------------ 2
60-69 ------------------ 10
70-79 ------------------ 12
80-89 ------------------ 27
90-99 ------------------ 21

Options
a)60-60
b)70-79
c)80-89
d)cannot be determined

GMAC can make a problem so difficult! Isn't it?

they have arranged the numbers for us and are just asking which number will be the median?

total number of observations is 73, so the median will be 37th number which will fall in the interval 80-89 .

(2+10+12+13)