Scales used to express measurements, usually ratio, interval, ordinal or nominal scales.

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4
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2answers
146 views

Can binary data be ordinal?

Binary data is often mentioned as a nominal sub-category, especially in such examples as female/male, smoker/non-smoker, etc. However, binary data with such values as pass/fail, correct/incorrect, ...
2
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1answer
31 views

What level of measurement are names by letters?

A respondent had to correctly recall the name of a character from the scenario. Both the first and the last names consisted of 5 letters each. For each letter, the respondent would get 0.2 points. If ...
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1answer
27 views

variable transformation in optimization

I have an optimization problem with two sets of parameters, $x_i \in [0,1]$ and $y_k \in [-\frac{\pi}{2},\frac{\pi}{2}]$ where $i,k \in \{1...n\}$ are indices. One way to solve this problem is using ...
2
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0answers
43 views

Computation of factors after factor analysis

I have run a principal axis factor analysis and I want to form scales for each factor. To be more specific, after having run the FA, I would like to select all items that load in a specific factor and ...
0
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1answer
23 views

Scikit-learn Scaled Data - Means Not Zero

I tried to scale the data by referring to the link as follow: http://scikit-learn.org/stable/modules/preprocessing.html However, when I checked the data distribution, the mean returned is NOT ZERO. ...
1
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1answer
56 views

Rule of thumb for using logarithmic scale

When I am given a variable, I usually decide wether to take its logarithm based on gut feeling. Usually I base it on its distribution - if it has long tail (like: salaries, GDP, ...) I use logarithm. ...
0
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1answer
9 views
1
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0answers
22 views

Age rounded down. Ordinal or Ratio?

Usually age is rounded down (i.e $15.7\simeq 15$). So shouldn't we treat it as an ordinal and not a ratio scale variable? If this is a duplicate question, please refer me to the duplicated question.
0
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0answers
15 views

Summative likert scale [duplicate]

I am looking for a relationship between two summative likert scale. Each one of them contains 7 items. The scale used for each item consists of 5 points. What is the best tool to use?
0
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0answers
26 views

How should I combine this binary scale with this 4-point scale?

I'm doing a meta-analysis and I want to combine the results of two questionnaires. One questionnaire has 30 questions about whether you've experienced certain traumatic life events. They're all ...
1
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0answers
22 views

Likert scale dependent variables

I am doing a research about the ethics in pharmaceutical industry. I've chosen 7 branding activities followed by pharmaceutical companies. I want to study the relationship between the perception of ...
1
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0answers
18 views

Finding a scale matrix of multivariate Cauchy distribution given a border of credible region

I want to solve the following problem: I have a multivariate Cauchy distribution, centered at $\mu$, with unknown scale matrix $\gamma$. Now I receive a data point (blue $x$ in the picture) and my ...
0
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0answers
68 views

When and why to use scale function (in R) in PCA analysis?

I understand that if the scale of the different variables varies(for example, some expressed in absolute form while other in percentages), that will cause problem in Principal component analysis ...
0
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0answers
10 views

Rescale two variables with respect to another and keep ratio

I hope this question is not too trivial. Assume that I estimated three variables in a mixed ordered probit MLE procedure: -$lt$: lower threshold -$ut$: upper threshold -$mu$: the latent variable ...
4
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0answers
64 views

Is there an alternate $\chi^2$ calculation useful for data spanning a large scale?

I have experimental small angle scattering data which provide information about the structure of a molecule. I can use a PDB file of a molecular structure (contains all the atom names and ...
0
votes
0answers
38 views

scale & why normality does not matter

So I was looking at the world happiness report 2013. In most of their questions they used "0 to 10 end-labelled scale". So ya, basically "0, 1, 2,.., 9, 10". I understand that these kind of scale data ...
1
vote
2answers
208 views

Independent and Dependent variables use different scales

How to deal with questionnaire, where 40 questions that represent 8 independent constructs use 5-point Likert's scales and another 5 questions that represent dependent variable use 6-points Likert's ...
0
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0answers
5 views

measuring loyalty scale

I have 8 items measuring one construct "Loyalty". Basically what I need I want to test if there are some questions that can be removed without any loss of information. How to achieve this, which tests ...
0
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0answers
10 views

one construct - two dimensions - test

Let say a) I have 4 questions that measurs LOY_ATT (attitudinal loyalty) b) I have 4 questions that mesature LOY BEH (behavioral loyalty) I want to test if "loyalty" consisting for those two ...
0
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1answer
26 views

Forecasting model - Scale mismatch

I have the following data: As you can see I want to create a regression model, which forecasts a variable, which I have also on a quartely basis. However, my volume is only on yearly basis. Is ...
0
votes
1answer
11 views

How to test that two covariates have the same impact on dependent variable?

Given the model $y =\beta_0 + \beta_1 x_1 + \beta_2 x_2 + u $ where $x_1$ and $x_2$ have completely different scales and units, is it possible to test whether their impact on $y$ is the same? i.e. ...
0
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0answers
32 views

how to estimate scale variance only using item sd's and scale reliability

The problem I encounter is that I need to estimate the scale variance of a psychometric scale without having the original data. The only information I have is the means of the (binary) items, their ...
1
vote
1answer
134 views

how to calculate expected sample scale mean and sd based on the means and sd's of its dichotomous items?

I am developing a new psychometric scale consisting of a several dichotomous items taken from a larger item bank. The p values (item means) are known. Now I need to calculate the expected mean and ...
6
votes
2answers
149 views

Alternative notions to that of proper scoring rules, and using scoring rules to evaluate models

A scoring rule is a means of evaluating an agent's guess of the probabilities associated with a categorical event, given a (categorical) outcome of the event. Depending on the guess and the observed ...
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0answers
42 views

Likert scale and correlation: when respondents are asked whether or not they agree with a statement

I'm having trouble figuring out how to go about applying correlation and/or regression to a set of Likert scale items that are statements that ask the respondents whether they feel two items are ...
2
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0answers
24 views

Comparing two values in a normal distribution after cutting off the tail of the distribution

I'm doing a sports-related analysis about comparing regular-season performance versus playoff performance, in particular which teams tend to do better during the playoffs. Thus, I'm making a "regular ...
1
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0answers
24 views

Is there any research that compares Likert scale questions to “satisfaction” scale questions?

I'm trying to put together a questionnaire for measuring employee satisfaction with an internal process. I'd like to figure out if there is reason to prefer: ...
1
vote
1answer
97 views

Creating a disease severity score/index

I am trying to design a numerical scale which would describe the severity of a certain disease (in this particular case anaphylaxis). I have a set of clinical symptoms and a database of patients who ...
2
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2answers
118 views

Which measurement level would this be?

I have a variable times of collaboration: the possible answers are 0 (meaning no collaboration), 1, 2, or 3. Would this mean I am dealing with an interval measurement level?
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0answers
40 views

Recode ordinary scaled variables

Iam trying to make a linear regression in STATA with ordinary scaled(in dataset): dependant variable(0;10) independant variable(0;10) Does anyone know how can recode the variables into metric scaled ...
0
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0answers
45 views

Calculating summated scales (factor analysis)

I have read that, when calculating summated scales for each scale in the solution of a factor analysis, as an average of sum of the items comprising each scale, the items with high loadings should be ...
1
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0answers
15 views

How to Deal with Peaks and Valleys on Scale Data

I've got a questionnaire/scale from 0-8, let's say it's a mood scale (0 = no depression, 8 = most depressed ever felt), subjects fill in a bubble along the scale, but the numbers aren't there, only ...
0
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0answers
23 views

Create scales from binary data

I am currently struggling with a statistics problem, I am in over my head, off the bus as one can say. As part of a research I am measuring incumbent response strategies to the perceived threat of ...
1
vote
1answer
120 views

Calculating Cronbach's alpha: Same scale, multiple instances

I'm working on data analysis for my dissertation, and I'm banging my head against the wall when it comes to Cronbach's alpha. I just completed a pretest; after data cleaning, I have 119 valid and ...
0
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0answers
10 views

how to identify items in scale that can be removed (as are measuring the same thing)

I am testing a scale with 17 items. I believe that some items are measuring exactly the same, so I thinkg those can be eliminated from the measurement scale. However, I do not know which test can ...
0
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1answer
23 views

tests one multi-question item effect on another multi-question item

I have two Constructs (composite variables), each Construct has its own measurement scale (questions). First Construct is named CETSCALE and it consists of 17 questions, second Construct consists of ...
1
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0answers
81 views

Factor analysis with varimax rotation gives very different answer from PCA?

I asked expert raters to evaluate several subject on six dimensions of creativity. Now, I am using factor analysis (factanal()) and PCA(princomp()) to see of these dimensions are measuring distinct ...
0
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0answers
43 views

Exploratory Factor Analysis and survey scales

Are there limitations to using EFA on survey data, where some questions have different scales? (ex. some questions are four-point and some are five-point Likert scales; one is on a 10-point scale) ...
0
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0answers
21 views

How do you correctly scale a formative latent variables in a structural equation model?

How does one scale a formative latent variable? I know that one option is to multiply one indicator by 1. What I do not understand is that if depending on which indicator is multiplied the direction ...
1
vote
1answer
257 views

Likert scale based composite variables

I am conducting a small research into the adoption of smart home technologies for elderly people. In this research I have conducted both questionnaires and interviews, with the questionnaire being ...
1
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2answers
76 views

Likert Scale 3 2 1 0 1 2 3 possible?

In my questionnaire I want to ask people to score on a dimensional Likert-type scale their attitude toward a specific target group. E.g. People with .... are stupid.... intelligent. I want to use ...
0
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0answers
54 views

Should I standardize or rescale with polynomial regression as alternative to difference scores?

I am working with a model that uses polynomial regression combined with response surface modelling as an alternative to difference scores in regression: ...
1
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0answers
423 views

How to normalize the data to [0, 1] in R with data similar to χ²-distribution without shrinking lower values too much?

I want to normalize the data to [0,1], but the distribution of this array is quite not regular, having large quantity of low values and small quantity of large values, almost 80% values of data are in ...
2
votes
2answers
52 views

Scales of Measurement

when we use the term " scales of measurement", what do we mean by scale by Measurement ? As far i know, measurement denotes "a value" and scale denotes "the unit" of the value. So if i say, ...
4
votes
3answers
973 views

When should I apply feature scaling for my data

I started a discussion with a collague of mine and we started to wonder, when should one apply feature normalization / scaling to the data? Lets say that we have a set of features with some of the ...
0
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0answers
58 views

Partial least squares regression on survey data with multiple scales

I have a survey data set composed of 7 scales, each scale with 7 to 10 items. The theoretical framework I've devised uses 5 of the scales as independent variables and 2 of the scales as dependent ...
0
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2answers
122 views

revert minmax normalization back to original value

i'm training a neural network. Normalization of inputs and outputs (training data) are carried out using min Max to a scale of [0-1]. I'm applying backpropagation learning algorithm. Firstly, i need ...
0
votes
1answer
159 views

libsvm: scaling data results in less features?

I've scaled my training and testing data in BASH like so: ...
1
vote
2answers
101 views

Latent Class Analysis vs Rasch Analysis

I was wondering if anybody could explain the core, philosophical/conceptual differences between Latent Class Analysis and Rasch Analysis. I'm not necessarily referring to the exact mathematical ...
0
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1answer
51 views

Need help with deciding on statistical test for three separate instruments

So I am trying to analyze my data. I used the following scales: Brief RCOPE, the Brief Multidimensional Measure of Religiousness/Spirituality (BMMRS), and the Satisfaction with Life scale (SWLS). They ...