The marks obtained by 50 students in a class is as shown below.
Determine
a) The mode
b) Interquartile range
c) Quartile deviation
d) Pass mark if 65% of the students were to pass
Mode - 50
inter quartile range = 70-50 = 20
quartile deviation = 20/2 = 10
if 65% students were passed then passing mark is between 50 and 60
