Question

The heights of boys and girls of 9th class of a school are given below compare the heights of the boys and girls [hint :find median heights of boys and girls]

Answer 1

Answer:

Here's your answer

Step-by-step explanation:

Height (cm) 135 140 147 152 155 160

Boys 2 5 12 10 7 1

Girls 1 2 10 5 6 5

Total number of Boys =2+5+12+10+7+1=3

Sum of heights of all boys=135×2+140×5+147×12+152×10+155×7+160×1 = 5499

Average height of boys = 5499 / 37 =148.62 cm

Total number of Girls =1+2+10+5+6+5=29

Sum of heights of allgirls=135×1+140×2+147×10+152×5+155×6+160×5 = 4375

Average height of girls = 4375 / 29 =150.86 cm

Hence,

The average height of Girls is 2 cm greater than the average height of Boys..

hope u understood dear..