weighted avg BA II plus

[brokecfa]

I could almost swear I knew how to do weighted avg in BA II plus for level II, but now when I punsh in X’s and their corrisponding Y’s, I simply get an avg of the x values without the y being considered as a weight
am I doing something wrrong, or you just cant do weighted avg in ba II plus

 

[cpk123]

Expected Return
The return on an investment as estimated by an asset pricing model is calculated by taking the average of the probability distribution of all possible returns. For example, a model might state that an investment has a 10% chance of a 100% return and a 90% chance of a 50% return. The expected return is calculated as:
Expected Return = 0.1 (1) + 0.9 (0.5) = 0.55 = 55%.
On the calculator:
• Press [1] [0] [%] [X] [1] [0] [0] [%] .
• Press [=] [STO] [1].
• Press [9] [0] [%] [X] [5] [0] [%].
• Press [=] [STO] [2].
• Press [RCL] [1] [+] [RCL] [2] [=].

 

[brokecfa]

thanks, so thats the only way, i dont remmber it being this long…?
maybe all along i was doing my method and getting a wrrong value cause it is not being weighted, simply avg of x’s
hahah

 

[sherbeer]

you can use 2nd data(7) then it ask x and y . after that 2nd stat(8) arrow up and down.
if this is what you are looking for.