9. Marks of 12 students in a unit test are given as 4, 21, 13, 17, 5,

1.	9. Marks of 12 students in a unit test are given as 4, 21, 13, 17, 5, 9, 10, 20, 19,1214. Assume a mean and calculate the arithmetic mean of the data. Assume annumber as mean and calculate the arithmetic mean again. Do you getthe šame resComment
Answer» Assumed mean = 13a.mean = (4+21+13+17+5+9+10+20+19+12+20+14)/12(154)/1212.8assumed mean = 12.8a.mean = 154/12a.mean = 12.8 Yes i got the same result assumed mean is 12

9. Marks of 12 students in a unit test are given as 4, 21, 13, 17, 5, 9, 10, 20, 19,1214. Assume a mean and calculate the arithmetic mean of the data. Assume annumber as mean and calculate the arithmetic mean again. Do you getthe šame resComment

Answer»

Assumed mean = 13a.mean = (4+21+13+17+5+9+10+20+19+12+20+14)/12(154)/1212.8assumed mean = 12.8a.mean = 154/12a.mean = 12.8

Yes i got the same result

assumed mean is 12