72 marks is included, calculate the new mean.The mean of marks obtaine

1.	72 marks is included, calculate the new mean.The mean of marks obtained by 15 students is 63. If marks of two students were read wrongly 73instead of 78 and 59 instead of 69, find the correct mean.9.or loft the mean was calculated again an
Answer» Mean of 15 students in 63.Total marks = 63*15 = 945.Corrected total marks = 945 - 73 - 59 + 78 + 69= 960. Correct Mean = 960 / 15 = 64. PLEASE HIT THE LIKE BUTTON

72 marks is included, calculate the new mean.The mean of marks obtained by 15 students is 63. If marks of two students were read wrongly 73instead of 78 and 59 instead of 69, find the correct mean.9.or loft the mean was calculated again an

Answer»

Mean of 15 students in 63.Total marks = 63*15 = 945.Corrected total marks = 945 - 73 - 59 + 78 + 69= 960.

Correct Mean = 960 / 15 = 64.

PLEASE HIT THE LIKE BUTTON