Question

please help!! question attached

Answer 1

@blurbendy

Answer 2

i'm not familiar with



do you know what that is?

Answer 3

yea isn't that just like saying the mean of x?

Answer 4

it is. it represents all the values of the mean of x. its called an x-bar

Answer 5

hm, i want to say true, but im not entirely sure.

Answer 6

@zzr0ck3r

Answer 7

:( I don't really get this question either

Answer 8

@ybarrap

Answer 9

This equation measures the distance of each sample to the estimated mean. It's a measure of dispersion (similar to standard deviation). It's not computing an average value, since you don't divide by N. Unless the samples are constant (i.e all equal), this sum will never equal zero. Recall, how can you get a sum of positive numbers to be zero. It can only be zero if ALL the samples are zero. Here, the absolute value makes every term of your series positive, which again, can only be zero, if every term is zero (i.e. every sample is the same), which will not be the case for any random sample greater than 1.

Answer 10

so its true right?

Answer 11

True.

Answer 12

ok

Answer 13

thanks