solve this 20 question
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the arithmetic mean of 5,6,9,x is 7
then
the formula of mean is sum of observations by number of observations..
so,
5+6+9+x/4 =7
20+x/4=7
20+x=7*4
20+x=28
x=28-20
x=8
then
the formula of mean is sum of observations by number of observations..
so,
5+6+9+x/4 =7
20+x/4=7
20+x=7*4
20+x=28
x=28-20
x=8
maths83:
right but i want this all 20 questions plz
Answered by
0
(5+6+9+x)/4=7
20+x=28
x=8
20+x=28
x=8
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