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let \[x1=6, x2=8,x3=9, x4=13. Evaluate m=\sum_{i=1}^{4}x1\]

Then use the values of x1, x2, x3, x4, and m to evaluate \[\frac{ \sum_{i=1}^{4}(x1=m)^2 }{4 }\]

Noone?:(

Isn't the first equation just telling you to add up x1, x2, x3 and x4...or am I missing something?

no, xsubscript 1

Hi there, the first just asks you their sum

Wait what seriously?

The e thingy with the i = 1 is saying add them up?

You simply mis-read

yep

o.O

the "thingy" is subscript i (small hard to read ;) )

just add them. I think the equation should read:\[\sum_{i=1}^{4}x_i\]

where m is the sum.

The second equation asks you to take the sum of the squares of x1, x2, x3 and x4

and then divide by four :)

sorry, i couldn't connect. It is a 1, not an i.

Well, that is kind of a strange question. Because, if x1=6, then\[\sum_{i=1}^{4}6=4(6)=24\]

Similarly,\[\frac{\sum_{i=1}^{4}(6)^2}{4}=\frac{4(36)}{4}=36\]