SOLUTION: how do you work out this formula? The following data are exam grades of 10 students in a maths class. If students who received at least 85% on this exam received a "maths star",wh

Algebra ->  Probability-and-statistics -> SOLUTION: how do you work out this formula? The following data are exam grades of 10 students in a maths class. If students who received at least 85% on this exam received a "maths star",wh      Log On


   

Question 854703: how do you work out this formula?
The following data are exam grades of 10 students in a maths class. If students who received at least 85% on this exam received a "maths star",what percentage of the students received a "maths star".
Interval Frequency
69-76 1
77-84 4
85-92 4
93-100 1
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Interval     Frequency

69-76                 1

77-84                 4

85-92                 4

93-100                1

 5/10 0r 50%  received  ≥  85 on exam and received a "maths star",