Your 40/60/80 score...

[warcraftaddict]

Passed!

40/60/80 score: 69.8% with AM 71.7% and PM 68%

Was <50% for Ethics in PM so good job my other sections were >70%!

[1recho]

@1recho

Hmmm… don’t have Excel where I am at (on vacation) but:

AM: 102 * 0.8 + 62 * 0.6 + 16 * 0.4 = 125.2 / 180 = 69.6%

PM: 162 * 0.8 + 18 * 0.4 = 136.8 / 180 = 76%

Average: 72.8%

And 300hours.com has this to say:

Thanks for participating! Here is your estimate summary: - Your indicated grade: Pass - Materials used: CFA Institute Curriculum, CFA Institute Practice Questions & Exams, Kaplan Schweser, AnalystForum.com - Your 40/60/80 score is: 74.6% - Your minimum score is: 64.7% - Your maximum score is: 90.1%

[Tex]

Thanks for participating! Here is your estimate summary: - Your indicated grade: Pass - Materials used: CFA Institute Curriculum, CFA Institute Practice Questions & Exams, AnalystForum.com - Your 40/60/80 score is: 74.7% - Your minimum score is: 67.3% - Your maximum score is: 89.2%

[GoldenStatePapi]

Passed

40/60/80 = 67.6%

AM = 57.1%

PM = 78%

Had to pull a rabbit out of my ass in the PM…Presto!

[1recho]

@mad_moiselle

had it by the skin of my teeth!

40/60/80 score: 62.5% with AM at 53% PM at 72%

min : 43.5%

max: 77%

Congrats, mademoiselle!

[user3127]

passed

40/60/80: 73%

[ochk88]

passed, overall 64.1%

AM: 64.2%

PM: 64%

[StormJin]

Passed with pretty similar overall to ochk88, 64.6%

AM: 57.2% (ugly)

PM: 72.0% (much better)

[Ernest]

Passed.

Overall: 69.2%

Morning: 66.3%

Afternoon: 72.0%

[stephenching]

Passed.

40/60/80

Overall: 74.1%

Morning: 68.1%

Afternoon: 80.0%

Max

Overall: 92.0%

Morning: 83.9%

Afternoon: 100.0%

Min

Overall: 54.0%

Morning: 62.0%

Afternoon: 70.0%

[urval87]

40/60/80 SCORE AM: 68.89% PM: 76% Overall 72.44% Passed! A low 60’s MPS with Ethics / Portfolio importance seems obvious!

[itera]

@kartelite

@VR1

@NANA_Hachiko

hmmm interesting… so some people pass with 59 and some failed at 63?

so my previous theory was probably correct, that some questions weigh more than others.

I don’t think all MC questions are 1 point each.

No, all MC questions carry the same weightage. Trying to derive a score from the result distribution matrix using any method is completely bogus and incorrect.

For example, the commonly used 40/60/80 method for MCQ is complete nonsense. You can never get exactly 80% (nor 60% nor 40%) in any section - the itemsets are in multiples of 6.

So for example, Fixed Income MCQ was 1 item set, 6 questions in PM paper worth 18 points.

• If CFAI will put you in > 70% category, then you scored 6/6 or 5/6 (or multiples of those) which implies you got 100% or 83.33% respectively in that section. If you use the 40/60/80 method you’re losing atleast 3.33% not to mention 20% if you acutally scored 100%. A better approximation might be to go with the expected value of your score in that section - if you are placed in > 70% category in a section, then you either scored 83.33% or 100% - two outcomes with probability of 0.5 each. So expected value for that particular section will be 83.33% x 0.5 + 100% x 0.5 = 91.67%. Even this is just probabilistic approximation.

• Similarly if they place you in 51% - 70% category, then you scored 4/6 (or multiples of that ratio) which implies you got 66.67%. In this case you’re pretty much certain what you scored.

• If you’re in the final category of <=50%, then you scored 0/6 or 1/6 or 2/6 or 3/6. If you attempt to calculate an expected value with those 4 possibilities with 25% probability each, then you get expected value = 25%.

So the 40/60/80 method is utter nonsense, even if you go with some level of probabilistic analysis, it should be a 25/66.67/91.67 method for the PM paper. For the AM paper, even such rudimentary analysis is impossible.

People do 40/60/80 for fun/ to gloat/ bask in their glory etc.

We cannot infer that each MCQ question carries a different weightage based on 40/60/80 or even the more logical 25/66.67/91.67 method.

Each MCQ is worth 3 points (which is the time alloted to that MCQ as stated by CFAI) while grading the question and calculating what you scored- there’s no complexity there.

Note that weightages are assigned to each MCQ to arrive at a MPS which is a part of the Modified Angoff method - it has no connection to individual scores.

Good post, but it doesn’t make sense to assume that 83% and 100% are equally likely outcomes given that someone scored over 70%.

Not exactly analogous, but if you flipped a fair coin six times, if you knew that there were greater than 4 heads, it would be much more likely that there were 5 rather than 6 total heads.

But this is not flipping a coin, you had control over your answer, and you can judge your confidence in each section. For example, I knew with super confidence I had nailed certain sections 100% last year.

look, nothing is perfect, but using a % that clearly is impossible is the argument against using 40/60/80.

[nworst]

I passed

my 40/60/80 score is 65.8% with AM abt 61% and PM abt 70.6%

Min = 51.4%

Max = 78.9%

Hope it helps

[Babsfrey]

Passed

40/60/80 = 71.4%

Minimum Score = 61.5%

Maximum Score = 84.4%

[alex_ray]

• Your indicated grade: Pass - Materials used: CFA Institute Curriculum, CFA Institute Practice Questions & Exams, Kaplan Schweser, 300Hours.com, AnalystForum.com - Your 40/60/80 score is: 64.2% - Your minimum score is: 45.6% - Your maximum score is: 78%

[VR1]

@Greenman72

Why do you think I said (in the opening paragraph of the thread):

@Greenman72

I know it’s not a perfect measure, but in the absence of “actual” scores, it’s about the best we can do.

I was hoping to avoid some self-righteous, pretentious crap like this:

@VR1

Trying to derive a score from the result distribution matrix using any method is completely bogus and incorrect.

For example, the commonly used 40/60/80 method for MCQ is complete nonsense. You can never get exactly 80% (nor 60% nor 40%) in any section…

Wow Greenman72! “self-righteous, pretentious crap” - that’s your argument against basic math? well done!

Anyway, my post was in response to Nana Hachiko’s theory of our beloved institute assigning each multiple choice question a different weightage which is completely wrong because its based on the faulty 40/60/80 method. I quoted her post in my response, i started by explicitly stating that her theory was wrong (my first statement in my previous post - No, all MC questions carry the same weightage) and provided some basic mathematical analysis to indicate why she cannot interpret the scores coming out of the 40/60/80 analysis as a basis for theorizing mutiple choice questions carry different weights and ended by concluding “We cannot infer that each MCQ question carries a different weightage based on 40/60/80 or even the more logical 25/66.67/91.67 method.Each MCQ is worth 3 points (which is the time alloted to that MCQ as stated by CFAI) while grading the question and calculating what you scored- there’s no complexity there”.

Not sure why you’re offended.

Please feel free to continue with your not-so self-righteous, not-so pretentious but still crappy, uh-how do you call it, ah-yes, “not perfect but best measure in absence of actual scores” 40/60/80 analysis. It has a lot of amusement value

[VR1]

@kartelite

Good post, but it doesn’t make sense to assume that 83% and 100% are equally likely outcomes given that someone scored over 70%.

Not exactly analogous, but if you flipped a fair coin six times, if you knew that there were greater than 4 heads, it would be much more likely that there were 5 rather than 6 total heads.

You’re right Kartelite. They’re not random outcomes - so they’re definitely not equally likely. But my intention was not to provide a better approach than 40/60/80. It was only meant to demonstrate even the slightly improved 25/66.67/91.67 is useless to predict scores and hence any further interpretation about multiple choice questions having different weights based on 40/60/80 analysis would be invalid.

P.S: Your analogy is slightly off though as itera rightly pointed out previously. Outcomes need to be a random variable to apply probability theory - the 83% and 100% are not random and hence not equally likely.

[ganeshrpl]

@zbas

How can I fail if it was 61.6 % ? I wish i could see my AM paper. People passed with 59%.

Zbas, how much did you score on Ethics portion, probably that was a game changer ?

[ganeshrpl]

Pass: My score was : 64.4%

AM: 58.8%

PM:70%

[kudos55]

I think Ethics (>70%) got me over the decision point for a PASS.

40/60/80 Score: 63%

AM: 58%

PM: 68%

Not pretty, but I’ll take it!