Question

The median of the following data is 525. find the values of a and b, it is given that there are 100 observations in the data.
class interval frequency
0-100 2
100-200 5
200-300 a
300-400 12
400-500 17
500-600 20
600-700 b
700-800 9
800-900 7
900-1000 4

Answer 1

100 is the correct answer of this question.