# Questions tagged [weighted]

The use of this tag is discouraged. Please use more specific "weighted-data", "weighted-sampling", "survey-weights", "weighted-regression" instead.

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### R weighted least squares vs ordinary least squares residuals

In base R, what do the unweighted residuals from weighted least squares (WLS) represent? Below I estimate ordinary least squares (OLS) and calculate the residual standard error (RSE). Then I estimate ...
936 views

### weighted kappa for intra/inter-rater reliability in SPSS

I am working with ordinal scales for cerebral atrophy (ratings 0 to 4) and vascular burden (ratings 0 to 3) assessed by two raters. I have installed the extension bundle for weighted kappa from SPSS ...
28 views

### Is it alright to remove $\frac{N' - 1}{N'}$ from the formula of weighted standard deviation?

$$\sqrt{\frac{\sum_{i = 1}^N{w_i \left( x_i - \overline{x}_w \right)^2}}{\frac{\left( N' - 1 \right) \sum_{i = 1}^N {w_i}}{N'}}}$$ Is it acceptable to remove the $\frac{N' - 1}{N'}$ from the formula ...
10 views

### how do i calculate a population size weighted risk ratio?

I am a bit stuck. I have age startified risk ratios from published data from which i have sampled 10,000 iterations. I have a population census data of the population that i am going to apply the ...
15 views

### calculating weights for weighted product model

I'm doing a fuzzy matching on accounts and have their name, date of birth and citizenship as additional factors. I am first evaluating the jarowinkler score of 2 names and if it is above a threshold ...
30 views

I have recently downloaded the extension for weighted kappa on SPSS. I followed the procedure of this video. However, at the end I have the following error "some ratings are not integers". Do you have ...
5 views

### Weighted average based of incoming volume and AHT per case in seconds

I want o calculate the weighted average for the AHT column in the below data Date Volume AHT per case in sec 1/2/2019 7188 44 sec 2/2/2019 453 123 sec 3/2/2019 345 563 sec Like this i ...
25 views

### Is explained variance a valid measure for weighted regression?

How should we calculate the R^2 statistics in weighted linear regression? Should we also weight each residual to decrease the sum of squares of the residuals? If ...
22 views

### How to weight values for a weighted average

I have 100 answers regarding production times in minutes of a certain product from 100 manufacturers around the country. I also know if these companies have met any of the 3 quality standards relating ...
810 views

### What is a mean zero time series?

Is a mean-zero time series simply minusing the average value of the series. Say I have data $Y=1,1,2,2,3,3$ would a mean zero series simply be, $$y=(1-2),(1-2),(2-2),(2-2),(3-2),(3-2)$$ as the mean ...