The mean of 100 numerical observations is 47.83. What is the value of the sum of all 100 numbers?
A. 4783
B. 0.4783
C. 4.783
D. 478.3
E. 47.83

Question

The mean of 100 numerical observations is 47.83. What is the value of the sum of all 100 numbers?
  		A. 	4783
  		B. 	0.4783
  		C. 	4.783
  		D. 	478.3
  		E. 	47.83

amistre64 · Answer

how do we find the mean of 100 numbers to start with?

anonymous · Answer

we avrage

amistre64 · Answer

right, and how do we average them?

anonymous · Answer

do you have to put them least to greatest?

amistre64 · Answer

no,  we simply add up the numbers, and divide by how many there are.  right?

anonymous · Answer

oh yea the x_1+x_2+x_3+...+x_n divied by n

amistre64 · Answer

sum of numbers
------------------  =  average
how many numbers





we are given that


   sum of numbers
------------------  =  47.83
             100


how do we determine the sum of the numbers?

anonymous · Answer

we add them  but to find that we multiply 47.83 by 100?

amistre64 · Answer

correct

anonymous · Answer

okay then thats the answer

amistre64 · Answer

yep ...

anonymous · Answer

thanks

amistre64 · Answer

good luck :)