# weighted average

1. ### Uncertainty of weighted average

Hello, I have a bunch of reflectances measured, each with a specific uncertainty at different wavelengths. I am trying to do a weighted average, knowing the weights for each measured reflectance. My question is what is the uncertainty of the weighted average? In other words, F_ave =...
2. ### Converting exposure values with log for weighted average method

Hello, I have a couple of transaction types with different risk scores in a scale between 0 to 10 [0-10]: Trans_type_1_risk = 8 and Number_of_trans_type_1 = 1.000.000 (~0.04% of Total_nbr_of_transactions) Trans_type_2_risk = 4 and Number_of_trans_type_2 = 1.000.000.000 (~40% of...
3. ### Averaging percentiles

Hello everyone, I am new to this forum and do not have a strong Statistical background. Recently I had to deal with the issue of averaging of percentiles. I noticed that in the transcripts of its students, my school is displaying the percentile in each subject and ultimately the percentile of...
4. ### Can a ratio of performance be used to measure dependence and assign weights in a weighted average?

With only a modest grasp of inferential stats and maths in general, I've been wondering how one might derive the weights for a weighted average from a variable that isn't as straightforward as a frequency score. Consider the following scenario. Let's say I have measurements of effectiveness for...
5. ### Should I use some sort of Chi Square Distribution or another method... Any assistance is greatly appreciated.

I am asking for assistance or guidance to point me in the right direction for this problem I am trying to find a solution. Problem: I need to come up with a percentage to show a Severity of Defects for monthly software releases at my company. Each month our customers inform us of bugs/issues...
6. ### Chi Square & Weighted Average

I am asking for assistance or guidance to point me in the right direction for this problem I am trying to find a solution. Problem: I need to come up with a percentage to show a Severity of Defects for monthly software releases at my company. Each month our customers inform us of bugs/issues...
7. ### Which Recommendation Algorithm for Sending Offers to Clients?

We are trying to identify which offers to send to our clients through email. Suppose we have offers with the following data: Offers: [ {  id: 1, countriesVisited: { France: 2 Italy: 34 Germany: 7 }, tourQualities: { First-class: 12, Economy: 31 } }, {  id: 2, countriesVisited: { Italy: 6...
8. ### Pension calculation: can you help deternine if this is methodologically adequate?

Hi, Thanks for taking to the time to check my post. Since this is a longish post, here is my question in a nutshell (read on for context and greater detail): “Would applying a weighted average formula twice, to two subsets of a group (so, once for each subset) (method A), instead of...
9. ### Weighted Average

Hi, I am a new member to this community and am having trouble calculating the weighted average of my dataset. Granted, I am a beginner in R barely scratching the surface of R and am trying to learn it as much as I can. I know what I want the outcome to be, I don't know where to start with...
10. ### increasing the statistical significance of outliers

Can someone give me some assistance on the use case below? Summary To create a Key Performance Indicator (as a percent of server utilization where 0% is the best and 100% the worst) that will alert a user when one or more servers in a 30 server environment needs attention. Details Each...
11. ### Basic Weighted Average Question

I have a simple weighted average question and I hope it’s not too basic for this forum. Let us say I have a scaling score from 1 to 10, in increments of 1. So: 1 2 3 4 5 6 7 8 9 10 And for each of those scores I have a population of 10. 10 10 10 10 10 10 10 10 10...