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

learn more… | top users | synonyms

0
votes
0answers
7 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... ...
0
votes
0answers
8 views

likert scale and binary logistic regression [duplicate]

I am working on a project trying to explain adoption of a certain technology. My dependent variable is binary (adoption/non-adoption) and i have several independent variables which are 5 point likert ...
1
vote
1answer
19 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 ...
0
votes
0answers
12 views

Scaling existing regression coefficients to predict for different dataset

I am tasked with coming up with a way to project customer activity for different groups of customers for 60 months. These groups can be based on a multitude of factors - plans, acquisition channel, ...
0
votes
1answer
19 views

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 ...
1
vote
0answers
22 views

T-test on variables with different scales

I have two variables (say x and y) that I want to compare using independent t-test to see if mean(x) > mean(y). The problem is that x (1 to 7) and y (1 to 12) have different scales and sample sizes. ...
0
votes
0answers
6 views

When is the distinction between interval and ratio levels of measurement meaningful?

Considering Steven's classification of levels of measurement, what are the practical situations in which it is relevant to distinguish between ratio and interval scales? What are concrete examples or ...
2
votes
1answer
17 views

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 ...
2
votes
0answers
40 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) ...
2
votes
1answer
80 views

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 ...
0
votes
0answers
8 views

How to form multi-item scales after doing a factor analysis

I am doing a content analysis research for bringing out news frames, and decided use Semetko and Valkenburg (2000) method, which consists in developing a set of questions that will help measure ...
0
votes
0answers
9 views

Missing data and feature scaling

I am interested in doing some feature scaling to try and tease out something from my data (box plots by outcome show that the 25/50/75 quantiles are very similar; certain variables have more ...
0
votes
0answers
48 views

Cronbach's alpha internal consistency test for interval scale or ratio scale data with different units

I have recently read dos Santos, S. F. & Brandi, H. S. 2015. Model framework to construct a single aggregate sustainability indicator: an application to the biodiesel supply chain. Clean ...
1
vote
0answers
73 views

How to plot a Semantic Differential profile in R? [closed]

It looks like it's a problem to find R code for plotting a Semantic Differential profile. The only I hardly found: https://github.com/justineuro/sdRplot. Here is the output example, visit . But it ...
0
votes
1answer
39 views

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 ...
0
votes
0answers
10 views

How to extrapolate when feature scaling

Feature scaling refers to a transformation of a variable $x$ so that it lies in range $[0, 1]$: $x' = \frac{x - \text{min}(x)}{\text{max}(x)-\text{min}(x)}$, and it depends on the maximum and ...
1
vote
0answers
14 views

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 ...
6
votes
2answers
193 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 ...
3
votes
1answer
98 views

RMSE is scale-dependent; is RMSE%?

I've got a graph of RMSE% vs. unit size and it declines nicely. Is this scale-dependence or does the "%" compensate for that? $$ \text{RMSE%} = 100\% \cdot \frac{\sqrt{\frac{1}{n}\Sigma_{i=1}^n (y_i ...
1
vote
1answer
14 views

Evaluating a pretreatment predictor with repeated measures ordinal data

I am currently attempting to study whether particular baseline factors predict pre/post changes in relation to a substance use intervention. However, a few things have me stumped. Our substance use ...
1
vote
0answers
18 views

Is there a correct way of comparing two different 'scales' of the same range?

Is there a correct way of comparing two different scales (for example; data which comes from a 4 option question and data which comes from a 7 option question) given that both datasets have the same ...
3
votes
1answer
60 views

How to interpret the fit of cfa (sem) outcome?

I did some CFA analyses (using R package Lavaan) on several scales in order to check the unidimensionalities. If I understood well scale 5, 6 and 7 can be considered a good fit because of the RMSEA ...
0
votes
0answers
42 views

How to calculate the mean of scale with scale and ordinal items measures in SPSS?

I have a scale called - Facebook Intensity Intensity, with 8 items, adapted from https://www.msu.edu/~nellison/TOIL/scales.html 6 out of 8 items are SCALE Measures, but others are ORDINAL as there ...
0
votes
0answers
28 views

scale and rescale the data predicted from neuralnetwork

i am trying to use neuralnet or mlp function on my data and then iuse to predict on my test data output [B], at the beginning i am using this code to rescale my data : maxs <- apply(data, 2, max) ...
0
votes
0answers
32 views

A feature of several items (likert scale) - one score is needed

Currently I am analysing the quantitative analysis data of my final Marketing project in SPSS and I have a doubt: I have conducted a survey with some questions grouped into 4 features (Trust; ...
0
votes
1answer
33 views

Combining binary and ordinal variables in a single scale for use as dependent variable

My brain is failing to come up with the right search terms to remind myself how to do this... I have two variables, one indicating a yes/no decision and the second indicating the respondent's ...
0
votes
0answers
76 views

How can I estimate the personal parameter (theta) with IRT in R?

I would like to obtain the individual personal ability (theta) estimate under 1PL and 2PL IRT model. I have already the item responses of every participants, how can I do this using the R package? I ...
0
votes
1answer
30 views

How can I make a grading scale more objective?

I want to come up with an at least slightly more objective scale than the one found here: https://www.profootballfocus.com/about/how-we-grade/ In the link, each play for each football player is ...
1
vote
0answers
8 views

Question about scales and z-scores

I have 1000+ evaluations of 65 students by faculty. Two different eval forms, each evaluating the student in 5 areas, but 2 different scales: 1 a 3-pt scale; the other a 4-point scale.I'm thinking ...
0
votes
1answer
29 views

Can Best-worst (Max-diff) scaling experimental designs be blocked?

To enable a large number of items to be used (i.e. generally more than 15 or 20), can Best-worst (Max-diff) scaling experimental designs be blocked for respondents? Could anyone suggest any material ...
1
vote
0answers
27 views

How to justify construct validity when items dropped from established instrument?

I conducted a survey in which I used the Major Depression Inventory (MDI). While analyzing this instrument (as my Depression construct) in SmartPLS, I iteratively dropped items that had ...
0
votes
1answer
27 views

Combining two scales

So, I have two scales, A and B, both ranging from 0 to 10. I would like to combine these into one as follows: At one endpoint, high values on A and high values on B At the other endpoint, high values ...
0
votes
0answers
11 views

Metanalysis of normalized mean values - How to normalized the standard deviation

This is my first question here so I am not sure if will frame it correctly. I am trying to do a simple metanalysis of raw means comparing a psychological assessment (i.e. depression level) in two time ...
3
votes
1answer
52 views

Non-Significant difference between individual items, but significant difference between overall scores

Say that we have a scale measuring Healthiness of Diet, and want to see if two populations have different levels of Healthiness of Diet. If we find that the difference between the two samples at the ...
0
votes
0answers
26 views

Which classifiers need feature scaling? [duplicate]

Is feature scaling (for example mean normalization) always preferred or can it sometimes lead to poor accuracy? How do I know whether I should perform feature scaling or not? Which tasks/classifiers ...
0
votes
1answer
48 views

Assessing distribution of a Likert scales

I am looking to analyse Likert scales, and want to assess whether there is 'sufficient variation' along the scale [i.e. that the majority of respondents are not 'clumped together' or a particular ...
0
votes
0answers
17 views

What specific Reliability measure can be used in SPSS when multiple scales are used?

I have a survey of 360 individuals. I asked them questions with different types of answers (scales). I have few questions with Yes/No, few questions with multi-categorical answers (types of ...
4
votes
2answers
244 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
votes
1answer
46 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 ...
1
vote
1answer
38 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
votes
0answers
56 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
votes
1answer
41 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. ...
3
votes
1answer
143 views

Rule of thumb for using logarithmic scale

When I am given a variable, I usually decide whether 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 ...
0
votes
1answer
34 views
1
vote
0answers
45 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
votes
0answers
43 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
votes
0answers
51 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
vote
0answers
39 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
vote
0answers
26 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
votes
0answers
195 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 ...