Questions tagged [analysis]

For questions dealing with the applied analysis of a specific dataset or design of experiment. Posts tagged analysis are requesting statistical consulting assistance from the network. Questions tagged analysis need to be phrased appropriately.

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How do I statistically analyze a DOUBLE PRETEST NEGD design with control and repeated measures

Recently completed a quasi-experimental design study: O O x O O O (Treatment) O O - O O O (Comparison/Control) Double pretest was to counter validity threats because these were student classes (...
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Discrepancies with SMARTPLS and SPSS Items' Loadings [closed]

Problem: Why are my loadings good in SMARTPLS's report (Outer Loadings) but bad when conducting factor analysis in SPSS? Details: When I conduct Factor Analysis in SPSS and go through all the ...
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Quantifying Similarity of Survey Responses

I have 6 survey responses with Likert scale questions and some basic demographic information. The 6 responses are pulled from the same group. They all met my selection criteria (School principals ...
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Experimental, Control and Waitlist Control analysis - treating waitlist control as 2 groups: experiment and control?

I have a 2.5 month intervention program that I would like to test. I have 30 experimental subjects, 30 control subjects and 30 waitlist control subjects. For experimental subjects, data were ...
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Which analysis should I use on spss

There are 20 participants. Each participant is subjected to 4 conditions and each condition is repeated 9 times. Each condition yields 2 outcomes. I’m not 100% sure which analysis would be best used ...
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Gauge R&R analysis - Preicision of a system

I never attempted to do a GR&R analysis before so I'm sharing an overview of what I would like to attempt to do and hopefully I would get some insight/advice/reference on which approach I should ...
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Correspondence Analysis GSVD (generalised single value decomposition) proof

I'm not able to found a simple proof or just a normal detailed proof of: \begin{aligned} \mathcal{X}^{2} &=n \text { trace }\left(\left(\mathbf{F}-\mathbf{r c}^{\prime}\right)^{\prime} \mathbf{D}_{...
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Can I run moderated mediation analysis on the a, b or c paths alone using mediation R package?

I am trying to run a moderated mediation analysis and I would like to know if there's an influence of the moderator in all paths, together and separately, with ...
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How can I do chi-squared tests on missing data?

I have a large dataset looking at how race is recorded. I want to see if there is an association between race being recorded in a specific dataset and not being recorded in another. For example, if ...
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How many types of randomization are there? And how they each dealt with in the experiment's design or statistical analysis?

I am trying to understand randomization in experiment design, and am very confused, because there appear to be several types of randomization possible. For example, for a Categorical Factor with Non-...
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How do i interpret this Scatter Plot

I'm researching on the relationship between Scholarship and years. I have scatter plot below. The x axis is equal to the total amount of scholarship for a student. The y axis show the term a student ...
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Given a distribution of the frequency of use of different materials in production orders, figure out how many top-used materials enter 98% of orders

I'm looking for help in a strategy for solving this. Tried just getting a ppf of the beta distribution, where q=98%, but I'm not sure I'm taking a right strategy altogether, because there is no data ...
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Is this an example of a univariate analysis?

Nonstatistician needs help with terms. Is the following an example of a univariate analysis?: Chances of getting a job at Microsoft with respect to demographic variables such as age, gender, race, etc....
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Use aggregate data with a linear regression

I am working on a project for my own portfolio regarding movies dataset. I want to go further on the idea that there is a pretty high correlation between Budget and Revenue. Alex the analyst made a ...
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What statistical treatment for respondent profile and 5 point likert scale survey question?

What statistical treatment will I use using survey questionnaire with respondent profile and 5 point likert scale?
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How to measure ALL independent variables in ALL AND DIFFERENT combinations influence the dependent variable [duplicate]

Different combinations for independent variables: what I need in the end EDIT: How to measure ALL independent variables in ALL and DIFFERENT combinations influence the dependent variable (PLEASE see ...
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Should I analyze this data using a Friedman test or another non-parametric test?

Last year, I had previously ran a pilot study looking at certain effects color had on how individuals perceived food. This year, I completed a larger study with a more refined methodology. In the ...
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Analysis for time to event

In a study I am conducting, I am looking at the time to event (use of opioid analgesic) as a marker of effective analgesia (pain relief) effect for morphine given intrathecally prior to the operation. ...
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What approach do I use to analyze this F&B sales data?

I work as a data analyst at a theme park (kind of like disney) but we operate only during 4-6 months in an year. I was asked to analyze the F&B sales at the different locations in the park and ...
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Cluster analysis for a whole sample and subgroups

I used Latent Gold for cluster analysis of a sample (N=~3000). Then I used the same variables to cluster a the two subgroups that constitute the sample. It performed well for one subgroup, but not for ...
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Distance formula from known reference coordinates X, Y, and Z to the centroid of measured coordinates xi, yi and zi using standard deviations

A device with 1932, 1cm-outer diameter (OD) oil-filled markers embedded in seven parallel flat plastic plates, with marker spacing of 25 mm × 25 mm in-plane and 55 mm through-plane is imaged in an MRI ...
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Using phi as a measure of correlation for categorical analysis

I'm working on a data analysis project where I've been asked to measure the association between specific values of categorical variables, and I wanted to make sure my thinking was correct. So for ...
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Fitting a survival model to see if there is interaction between gender and age

hi I am new to survival analysis. I am trying to fit a cox regression model with age, sex, type of case(local vs imported cases), and regions(urban vs rural). I tries to fit two model ModelA ...
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Three-way Mixed ANOVA (BBW) - sig vs no sig interactions, what now?

I'm desperately trying to have an answer for this, but no luck so far. My RQ: Do students experience increased anxiety prior to their first laboratory (yes) Can a short intervention reduce this ...
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Choosing a test for questionnaire analysis

I want to analyse the data from the following experiment setup: Participants were divided into three groups, each group read a story and had to anwser a question by choosing option A or B. The age, ...
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Suggestion for panel estimations?

I have dataset of 182 firms for 3 years(2017-2019) observations of each firm. Please suggest me that what type of panel estimation will be suitable for this type of data?
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Delinquency pre strategy implementation

I have recently implemented a new strategy for our bank customers where the customers cannot take any advance from the bank after x% of their limit Question- Now let us suppose if the delinquency rate ...
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Robust wave variograms

I am reading a research paper Eyer 1999 in which they characterize variable stars using Robust wave variograms so what is mean by Robust wave variogram and how can we analyze time series of any data (...
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When performing randomisation tests on my single-case design data, do I include all participants?

I have just completed a single-case, multiple baseline design study with 5 participants. I was planning to perform visual analysis and randomisation tests (RT). However, 2 participants have >50% ...
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Analysing dose-response relationship when my data does not adhere to sigmodial relationship

I have been trying to analyse the chronic toxicity data to my Bachelor's dissertation in R. The problem is that the data does not adhere to a sigmodial relationship when trying to calculate the LC50 ...
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Ranking/scoring participants of a multi-sport Olympics

Let's say that I organize a week of sporting events. Each event is considered equally difficult --- winning in one event should be just as rewarding as winning in any other event. Each athlete has the ...
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Problem producing Confidence Interval and got an NaNS when using probit analysis

I have a dose/response relationship from the chronic toxicity test I have done and I intended to use a probit analysis (LC_probit function of the ecotox package) to calculate the LC50 value of the ...
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Rolling Regression Coefficient Analysis

I have been creating a rolling regression where the dependent variable is the return of an asset and the independent variable is a Market Factor / CAPM. I have been creating the rolling regression for ...
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Predicting values in combined training/testing data after model selection

I've trained several predictive models to try to impute missing data on training data and evaluated the performance of the models on test data. Now that I've found a model that performed the best, is ...
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Sensitivity, Accuracy, AUROC, Gini

I got following chart: The algorithms have been applied to a dataset where an outcome is pretty rare, it happens 10% of the times (binary, 0- 90%, 1-10%). It is the response whether a client is going ...
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proper comparison of averages

I have a data set in hand that shows me the average GPA per school in a district for the last three years. My goal is to rank each school based on %change from the 2018-2019 year compared to the 2020-...
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25 views

How to find parameters of sigmoid function given two thresholds?

Let's say I start with a sigmoid function $$f(x) = \frac{1}{1+\exp{\frac{-(x-c)}{d}}}$$ where the upper limit is 1 and lower limit 0, how can I for example find the appropriate values of the ...
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Is it right to join two groups followed in distinct periods of time of the same length in one single Kaplan Meier estimate?

I followed two groups of people for one year. Both were subjected to the same conditions, just in two different periods. One group was followed throughout 2019 and another was followed throughout 2020....
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Best methods to analyze the results of a pairwise comparison survey?

I have recently conducted as survey where I was comparing a range of different images. Due to screen size constraints I decided to display these images pairwise and ask the participants to pick one of ...
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what type of data analysis should I carry out

In my experiment I have two groups each with 30 participants (experimental group and a control group) The experimental group consists of autistic individuals and the control consists of neurotypical ...
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Average variance extracted (AVE) with correlated error terms

after conducting a CFA I did some modifications to include correlated error terms (Error covariances) in my measurement models. Now I am wondering whether I need to apply a different formula für AVE / ...
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Experiment Design: Best way to detect seasonality patterns in trading data?

I wanted to analyze crypto derivatives data and see if there is any seasonality/patterns to it. I have a daily dataset for about 400 days, and wanted to check for weekly/monthly/quarterly seasonality. ...
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Which of these regression analysis to use?

I come primarily from a machine learning background, which I believe is what you'd say as a predictive form of analysis. However, I am now trying to publish some results in a paper about how different ...
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Reduced Chi^2 value interpretations below 1

I have an experiment where I have fitted an exponential decay over some data taken from a radioactive decay experiment. The fit yields a reduced X^2 of less than 1 What should be inferred by a X^2 of ...
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Which model to use for analysis of data from Likert scales?

I have a dependent variable scored from 2 to 10 (this is calculated from two questions with a 5-point Likert scale, strongly disagree to strongly agree, one of which is reversed) I have 5 independent ...
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How to compare two groups with respect to the relative change in outcomes after treatment when there are two repeated measurements -- pre/post test?

There are two groups of patients, say, young and old, and we want to determine whether these two groups of patients react differently to our treatment. Let $X$ be a continuous dependent variable, say, ...
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Exploratory factor analysis and multiple regression

I am conducting an exploratory factor analysis on 62 variables, from which I have extracted 5 factors. I would now like to understand how gender (1= male, 2=female, 3=other), drug use (0=never, 1=...
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Which regression analysis to use?

I have percentage change data compared to a baseline of public and private transport activity over 1 year. With the help of one or two independent variables I want to analyze if there is a switch ...
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I need help choosing a statistical method for my problem

I have 12 tools from different labs that are similar to each other. They measure two different parameters (green intensity and red intensity). I have 4 samples that will be measured 3 times each by ...

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