Question

Evaluate for m and evaluate the equation

Answer 1

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

Answer 2

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

Answer 3

Noone?:(

Answer 4

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

Answer 5

no, xsubscript 1

Answer 6

Hi there, the first just asks you their sum

Answer 7

Wait what seriously?

Answer 8

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

Answer 9

You simply mis-read

Answer 10

yep

Answer 11

o.O

Answer 12

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

Answer 13

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

Answer 14

where m is the sum.

Answer 15

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

Answer 16

and then divide by four :)

Answer 17

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

Answer 18

@Mikael

Answer 19

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

Answer 20

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