# Questions tagged [scales]

Scales used to express measurements. Usually ratio, interval, ordinal or nominal types of scales are recognized. Dichotomous and count types are sometimes seen as their own. Other classifications exist. [For "scale" as a sum of individual items in psychometry - see also tag 'psychometrics'.]

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### Change in numerical values and troubles for rescaling data

Here is my problem, a step in the analysis that should be quick & easy, but... I have very various scales in my data and need to rescale my variables to compare them more efficiently in a lmer as ...
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### Is my data ordinal?

I am comparing three groups of participants, who gave ratings during a certain test on a scale from $1$ to $4$ (with $0.25$ steps). I was planning to do an ANOVA, but realized that a thing such as the ...
892 views

### Scaling after Principal Component Analysis

I am attempting to model the yield of various crops as a function of weather data, namely one temperature variable and 7 moisture-related variables (measuring different aspects of moisture content). ...
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### Likert scale with linear form input control

If I want to collect the order of agreement with a statement in a questionnaire, I’d traditionally use an ordinal Likert scale, most likely with classic 5 points, but maybe 4, 6 or 7 and perhaps with ...
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### Comparing different scale ranges for one Likert scale instrument

I don't believe this exact question has been asked before. I am conducting a meta-analysis on a certain Likert scale survey instrument that has been psychometrically validated. It is a 16 question ...
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### what am i supposed to do if realiability test not up to 0.7?

hye. i have gathered 257 questionnaires with 43 variables the requirement for my research department need me to make the reliability test up to 0.7 or else it consider not reliable.But mine is 0.5. ...
105 views

### Scale a set of probabilities so their sum is a target value [closed]

I have a set of probabilities; e.g. $p = (0.95, 0.9, 0.6)$ I want to scale them up so that their sum moves from $\sum p = 2.45$ to $\sum p^* = 2.5$. I think I need normalise to ensure the rescaled ...
473 views

### Analytic Hierarchy Process (AHP) - factor weight score

As title mentioned, how to determine the 'scale of relative importance' point for factor weight score? Besides, I have read some example of ahp saying there are 1-9 point, 1-5 point (1,2,3,4,5) and ...
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### aggregating constructs by Group

This is probably a very basic question; I have a data-frame with a fake questionnaire with three sets of questions measuring three constructs. I'm currently reading some research papers which in ...
98 views

### Measure heterogeneity among multiple samples and scale variables

I would like to know what are the available statistical measures for quantifying heterogeneity on data that look like this... ...
92 views

### Normalizing the Turbulence index to match other indices

I calculated the index of complexity, longitudinal entropy, and turbulence for my data. The first two indicators vary from 0 to 1, whereas turbulence varies between 1 and 16 for one dataset and ...
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### Can one calculate a general mean for questions that use different scale length?

I have two sets of questions: 1). 5 questions with answer options from 0 to 10 (very unsatisfied to very satisfied) and 2). 9 questions with answer options from 1 to 6 (same meaning) The study was ...
598 views

### Statistical questions related to Deep Learning

I have questions regarding this Normalized weights and Initial inputs video on Udacity course Deep Learning. In this video it talks about variables that go into Big-loss function should have zero ...
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### Correspondence between two different depression scales?

I have become involved in a project where psychiatrists are studying the correspondence between two scales measuring the level of depression among a specific patient group. One of the scales is for ...
164 views

### How to find the correct spatial scale in landscape ecology?

I am currently studying the effect of organic farming on honeybee colonies. I have calculated the percentage of organic land in several buffer areas around the hives (from 100m to 3000m in 100m steps) ...
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### Is a glm appropriate with the dependent variable on an interval scale?

Data has to meet some criteria concerning scale if you want to use a GLM. For Ordinally scaled dependent variables GLM's are clearly not appropriate for example. I couldn't find anything which speaks ...
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### Effects in metaanalysis forest plots - what are the conclusions?

In metaanalysis results are often reported in forest plots, where multiple studies are included. Different, continuous outcome scales are used to measure the effect of a treatment on the course of a ...
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### MLE: Does the scale of predictor variables affect whether the hessian is positive definite?

I am trying to fit a regression via maximum likelihood estimation, one of the regression terms involves $\beta_0e^{(\beta t)}$ where $t$ is measured in hours and has a range of 0 to 90 days. The ...
3k views

### Sum of rating scores vs estimated factor scores?

I'd be interested to receive suggestions about when to use "factor scores" over plain sum of scores when constructing scales. I.e. "Refined" over "non-refined" methods of scoring a factor. From ...
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### 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 ...