3 years ago

If the mean of the observations x1, x2....,xn is ,

1 answer:

4 0

Hello,

$\sum_{i=1}^n\ ( x_{i} -\overline{x})\\

=\sum_{i=1}^n\ x_{i} -\ \overline{x}\ \sum_{i=1}^n\ 1\\

=n*\overline{x}- \overline{x}*n=0

$

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=======================================================

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2 years ago

The sum of three consecutive numbers is 99. What is the smallest number??

erica [24]

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

A store wants to print flyers to a advertise its grand opening.A printer will charge $50 and 0.05 per flyer.If the store has a b

Kamila [148]

So it can be

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Hope this helps

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3 years ago