# Tagged Questions

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### scikit-learn score metric

I am using scikit-learn in Python and they define a quantity called score. It's defined in the middle of the documentation page. Reproduced here: Returns the ...
34 views

### Calculating and using factor scores

I have performed a factor analysis of 14 binary items (Satisfactory vs Not Satisfactory) which yielded 2 factors with 7 items each. I am interested in creating simple factor scores by summing ...
245 views

### How to transform factor scores of a PCA for a regression, in SPSS?

I am really a novice in statistics and really need some help! I find here, or in any books answer to my problem. If I missed it, sorry about that and could you share the link with me, please? Here, ...
26k views

### What are principal component scores?

I know this is probably simplistic but what are Principal component scores? This question originates from my attempt to understand this question here.
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### Classifier for only one class

In a simple classification, we have two classes: class-0 and class-1. In some data I only have values for class-1, so none for class-0. Now I am thinking about making a model to model the data for ...
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### Target and Non-target scores, BOSARIS Toolkit

I am working on a binary classification problem using Artificial Neural Networks. My questions are: 1) What are "target scores" and "non-target scores" in a classifier, and how can I make my ...
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### How to get an “averaged” score?

Assume a game wherein a character's "power" is made up of several factors, like speed, weight, body build, etc. And let's say that each of these factors were scored 0, 1, 2 wherein 0 means average, 1 ...
140 views

### Percentile to Z-score in PHP or JAVA

I am searching for a way to calculate the $z$-score for a given percentile $p$. I found this site doing such a calculation. They have given a formula for calculating $P(Z\leq z)$:  \Phi(z) = P(Z ...
15 views

### Combining critic scores into single rating

I have a collection of scores from critics for various restaurants. Some restaurants are rated by multiple critics and some by only a single critic. Each critic rates restaurants using different ...
49 views

### How do I create utility scores from an unequal number of inputs

In my data I have an outcome - "daily satisfaction" - measured on a 1 to 5 scale with 5 representing the respondent was very satisfied with her day and 1 representing the respondent was very ...
50 views

### Is it possible to plot factor scores in a graph?

I have 5 factor scores which were saved out from Mplus6 to SPSS using commands below. Savedata; SAVE=fscores; I have the variables in SPSS and used them in some ...
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### Score Variance of supplementary individuals in PCA

I have posted an almost similar question last week but I want to get some more of the theoretical background Difference in Variance of factor scores for supplementary and active observations PCA. I ...
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### Make Score Value to evaluate social popularity (from fb likes count)

I have a list of websites and Facebook likes count for each of them. Count varies from 0 to millions. For each website I want to make up some Score Value from 0 to 10, which would represent sites' ...
3k views

### How to interpret factor scores saved using the regression method in SPSS?

I have 30 attribute variables with response on a 1 to 5 scale (e.g., extremely important, very important, important, not that important, etc.) I ran factor analysis in SPSS and extracted 6 factors and ...
53 views

### On the distribution of exam scores and the use of t-tests

A while back, I did some educational research where I compared exam scores between two groups. I remember reading somewhere that educational exams such as these tend to follow a normal distribution. ...
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### How would I find the scores/loadings matrices from the covariance method for principal component analysis?

I'm writing an Java implementation of PCA that uses the covariance method of transforming a data set: (With m x n input matrix X and k desired principal components) 1. Transform X into X' by, for ...
34 views

### Predicting Risk based on weighted data

I am looking for a formula I can use in Excel that will provide a risk score from 1 - 10 with 10 being high risk. I have a set of 15 data items (i will add more in future) which are weighted on a ...
48 views

### Fitting Mancova model on factor scores

I have two matrices with multiple variables. The two matrices come from same sample.I would call them matrix A and Matrix B.Each of them have many correlated variables . I would want to evaluate the ...
311 views

### Method to output statistical score when validating using bootstrap method on ordinal logistic regression model

It is about sas programming. Thank you in advance. I build an ordinal logistic regression model on my data. ...
123 views

### Shifted intercepts in logistic regression

I have a question about the effects of shifting the intercept in a logistic fit on the mean of a particular transformation of the scores. Here is the notation I will be using for the question. The ...
138 views

### Using z-Score for multiple comparisons

I have data collected from three groups and I would like to calculate the z-score using the grand mean and variance of the combined three groups. Would it be possible to then compare the z-scores of ...
830 views

### Are composite variables (eg. a score) valid to perfom a SEM in AMOS?

I have a resilience scale with 11 items (observed variables), from which I calculated the mean to get a "resilience score" (what would usually be an unobserved variable or latent construct in SEM ...
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### Designing a Simple (a.k.a 'bad') Ranking value from several values of unknown distribution

I am but a humble developer, so please forgive if I butcher terminology of confuse concepts. I am looking at designing a simple ranking of Average Internet Audience Rank based upon a bloggers ...
132 views

### Weight variables to develop scoring algorithm

I am studying how to develop a prognostic index in medicine. I have read some articles and in all of them metholodgy is quite the same. Most of them use logistic regression, choose variables and build ...
256 views

### Split-half reliability on binary scores

I'm very new at statistics, so excuse me if my questions are to simple or obvious. I have a dataset with response times for two conditions. These response times were converted into a binary score of ...
112 views

### Is it possible (or even usefull) to transform Log transformed data into Z-scores?

We have created a questionnaire. In this questionnaire there are different dimensions with different answering scales. Because of our rightly skewed data we log transformed our data. But here is the ...
3k views

### Computation of composite score or summed score from Likert scale

I am proposing a survey for my research proposal in speech therapy. There is a set of guidelines that speech therapists are supposed to follow, so that all questions are conceptually related - so that ...
166 views

### How to determine the accuracy of a statement?

Scenario: Consider a statement, e.g. "This movie is an action" Then let people vote on that. 1-5 where 1 is "Not action", 3 is "Some action" and 5 is "Pure action". Question How does one determine ...
19k views

### What's the difference between Normalization and Standardization?

At work we were discussing this as my boss has never heard of normalization. In Linear Algebra, Normalization seems to refer to the dividing of a vector by its length. And in statistics, ...
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### Is using a questionnaire score (EuroQol's EQ-5D) with a bimodal distribution as outcome in linear regression a problem?

There is currently a debate whether the EQ-5D score that has a ceiling problem and a bimodal distribution can be used in a linear regression model or not. Background The score is very simple and ...
3k views

### PCA scores in multiple regression

A while ago a user on R-help mailing list asked about the soundness of using PCA scores in a regression. The user is trying to use some PC scores to explain variation in another PC (see full ...
332 views

### Combining metrics for score card

We are building a score card system to measure the performance of various groups in the organization. The scores are generated by true / false metrics on individual transactions that each group ...
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### How can I avoid artificially inflating percentages?

I'm currently analyzing my data for one of my studies for my PhD dissertation in psychology. I'm hoping someone can help me with a problem I'm having... I've conducted a study in which participants ...
Lets say we have $T$ tags and $N$ articles and lets say that for each tag $t_{i}$ we know that it has tagged $n_{i}$ articles. Meaning that, frequency($t_{i}$)=$n_{i}$. Given the above information ...