Can anyone help me learn this?
Google isn't entirely helpful.

Question

Can anyone help me learn this?
Google isn't entirely helpful.

rockinhood · Answer

http://prntscr.com/b2vhbm

phi · Answer

multiply the amount times the ROR for each line
add up all of those products
then divide by the sum of the "amounts"

rockinhood · Answer

11 is b

rockinhood · Answer

According to this, 12 should be D.

rockinhood · Answer

Calculate the weighted mean of the RORs for each portfolio. Based on the results, which list shows a comparison of the overall performance of the portfolios, from worst to best?

rockinhood · Answer

John's Investment Portfolio is shown below, what is his weighted mean ROR?

phi · Answer

your columns look ok
but your weighted mean is wrong.
once you get, for example, in Portfolio 1
-597.30
you divide that by the total value of the investments which is the sum of
300
   3000
   1800
   2200
    900
-----------
8200
you get a mean ROR=  -597.30/8200 = -0.072841 = -7.28%

rockinhood · Answer

right, I divided the wrong things, I realized that after I uploaded haha