Question

Find the mean weight of 70 students from the following data: Weight 50 52 54 56 58 60 62 64 No.of students 8 10 15 20 8 6 2 1

Answer 1

50×8+52×10+54×15+56×20+58×8+60×6+62×2+64×1=3862/70=55.17
this is ur answer

Answer 2

Answer:

55.17

Step-by-step explanation:

Xi=50,52,54,56,58,60,62,64

fi=8,10,15,20,86,2,1

fiXi=400,520,810,1120,464,360,124,64

TOTAL=fi=70. =fiXi=3862

MEAN=fiXi = 3862 = 55.17

fi 70