plzz do it..
urgently..
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Answered by
0
Answer:
16
let the 7th number be x
mean=sum of all observation/total number of observation
12=10+17+14+9+13+5+x/7
12×7=68+x
84=68+x
84-68=x
x=16.
hope it helps........
Answered by
1
Answer:
mean =sum of all number
---------------------------------------
no. of all observation
12=10+17+14+9+13+5+x
-------------------------------
7
12=68+x
---
7
12×7=68+x
84=68+x
84-68=x
16=x
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