Question

X ΣWX ΣW NUMERICALS dividual Series Marks obtained by a student in 6 subjects are 84, 91, 72, 68, 87 and 78. Find the Arithmetic Mean of the marks using Direct and Short-cut Methods. pusing shord cut [Ans: 80 marks] Weekly expenditure of 7 families are: 600 550 720 00​

Answer 1

Explanation:

X ΣWX ΣW NUMERICALS dividual Series Marks obtained by a student in 6 subjects are 84, 91, 72, 68, 87 and 78. Find the Arithmetic Mean of the marks using Direct and Short-cut Methods. pusing shord cut [Ans: 80 marks] Weekly expenditure of 7 families are: 600 550 720 00