Question

Q.38 :-In a class of 40 students the average height of some groups of students was tabulated as under:

The average height of each student of the class is​

Answer 1

Answer:

68.25

Step-by-step explanation:

(14×67.5)+(18×68.5)+(8×70) / 14+18+8

945+1233+560 / 40

2730 / 40

68.25