Q1 of 47 Page 86

The following data give the number of boys of a particular age in a class of 40 students. Calculate the mean age of the students

GIVEN:


FORMULA USED: Arithmetic mean =


Let age of student be x


And number of students be frequency f



∑f = 3 + 8 + 9 + 11 + 6 + 3


= 40


∑xf = 39 + 112 + 135 + 176 + 102 + 54


= 618


Arithmetic mean =


Arithmetic mean = = 15.45


CONCLUSION: Mean age of given data is 15.45years


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