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.

Filter by
Sorted by
Tagged with
0
votes
0answers
36 views

Lottery task, ambiguity aversion, switching point …which analysis?

I have Ambiguity Aversion as Predictor. I have a lottery consisting of 10 choices, for each choice participants must say whether they prefer the risky lottery or the ambiguous one. So a the end I can ...
0
votes
0answers
13 views

Advice on what model to use to perform a formal analysis

I am using the data psid from the library faraway and want to investigate the interaction between sex and year. Specifically, as the year increases does gender impact income less? I've done some ...
1
vote
0answers
23 views

T-test and ANOVA suggesting different results?

I'd like to start off by saying I am very much a beginner to statistical analyses, so I might be missing some key ideas here. Context: My study involves an experimental group and control group that ...
0
votes
0answers
8 views

What is threshold in ROC curve? [duplicate]

Whenever I read about ROC, people say that it is graphical representation of True Positive Rate value and False Positive Rate at various threshold. Whenever I read in detail, people explain that ...
1
vote
0answers
22 views

What is the design of this experiment and how do i analyze it

I carried out an experiment in two locations. For the two locations, the experimental set up was 95 genotypes of a plant in 3 replicates. For each replicate, I had 3 blocks in which the genotypes were ...
0
votes
1answer
14 views

True or False: The pattern of the residuals vs predicted values and the residuals vs a predictor based on a 2nd order model are exactly the same

I'm currently working on an assignment for a course in Statistics and was wondering anyones thoughts on this. My friends and I keep going back and forth on which one it is. I think it's true for the ...
0
votes
0answers
18 views

Is there a significant relationship between two data sets?

I am interested in image processing in python. I worked on detecting and tracking particles in an image. I obtained velocity data of particles in different regions. I believe that the difference ...
0
votes
0answers
12 views

How to Rank Parameters using Sobol Indices (Variance-based Ranking)

I am trying to compare different parameter ranking methods. The Sobol Indice method is the most representative method for ranking significant parameters based on contribution to output variance, ...
1
vote
1answer
33 views

Linear regressions of fluorescence and Discrete Chlorophyll

I'm pretty much clueless here. I'm doing a project in Springboard's Data Science Career Track. Most of the data science makes sense; the ML part, not so much. I have a data set from USGS - water ...
0
votes
0answers
7 views

I'm conducting a research with three dependent variables and an independent variable with four proxies

I'm conducting a research with three dependent variables and an independent variable with four proxies. The problem is that I don't know how to test my hypotheses
1
vote
0answers
18 views

Scenario Analysis with a GARCH model - conditional forecasts with hard restrictions on dependent variables?

Waggoner and Zha (1999), see reference below, developed an approach to produce conditional forecasts for VAR models with hard restrictions on the variables using Gibbs Sampling. As an example, they ...
0
votes
0answers
8 views

Interpretation of PCSE results

Hi I would like some help in the interpretation of results with regards to a regression analysis being conducted: One with a simple linear model: enter image description here The other with PCSE ...
1
vote
0answers
12 views

Analyzing Split-plot design

Am new to R. Am teaching myself and I got stuck with a data I wish to analyze. The design is a split plot and I have the following variables: Rep, Mainplot, Subplot, Weeks after Planting and measure ...
0
votes
0answers
7 views

How to measure the progression or regression of a set of numbers?

I apologize if I'm not asking this in the right place. I am trying to measure the progression or regression of a set of numbers. The numbers are respiratory rates. An example would be: 17/11: 1am - ...
0
votes
0answers
31 views

How to treat a duration of chronic disease

I have a data set that contains information about healthy dogs; dogs that have chronic heart disease; and dogs that have the same disease, but are considered as a long-livers. (All dogs in this ...
0
votes
0answers
16 views

How do I analyse a negative binomial with TWO stopping critera?

I'm a first time poster looking for stats advice. I'm a biologist performing research on numerosity in hummingbirds- in more layman's terms, whether they can "count" and tell the difference between ...
2
votes
0answers
25 views

High correlation between independent variables in multivariate regression: collinearity?

I will be grateful for some advice regarding using two highly correlated independent variables in a multivariate regression. I would like to control for respondents' religion (Muslim, Christian, ...
3
votes
1answer
25 views

What statistical test should I use? Visitors distribution in fitness center

I conducted a field study where I gathered data about the distribution of visitors over the day in a fitness center. The goal of the study was to implement a treatment that would shift visitors from ...
8
votes
2answers
945 views

When do we “stop” using multiple correction techniques?

I understand when performing a simple t-test, we typically control the type -1 error rate at $\alpha = .05$. This signifies that if the null hypothesis holds, the data will "incorrectly" reject the ...
0
votes
0answers
13 views

How can I plot a network from a correlation matrix? [duplicate]

I do hope my message finds you all well. I'm currently struggling trying to plot a correlation matrix as a network, to subsequently detect communities inside of it. What can I do to approach this? ...
0
votes
1answer
35 views

Chi square for presence/absence data?

Is it possible to do this with chi square? I have two groups of mice, one with a mutation in a gene and one without. I have analysed the presence/absence of organs in each group, and found that all ...
2
votes
1answer
139 views

Inventory forecasting algorithm for wines?

I'm trying to figure out a good inventory forecasting algorithm for wine sales. I have the following characteristics so far: Wine sales are cyclical and not seasonal Have incomplete time series: ...
0
votes
0answers
15 views

Amateur Question? Would I do a two-tailed test and then find Pearson's R?

Currently trying to find the correlation of two different datasets using a null and alternative hypothesis. Is it sufficient to report this using the p-value generated from pearson's R or will a two-...
2
votes
1answer
36 views

Legitimacy of Regressing Actual Values on Predicted Values for Better Residual Sum of Squares?

A coworker of mine recently performed an analysis where after training a simple linear model, he regressed the actual Y values against his model's predicted Y values, and applied this regression's ...
1
vote
0answers
21 views

Mediation analysis Baron and Kenny

I would be very grateful if someone could advise me as to why the indirect effect in this type of mediation analysis is made up of the product of a and b as opposed to the sum of a and b. Thank you ...
0
votes
0answers
4 views

Error Analysis For Denoising?

I have a collection of noisy audio files and their corresponding "clean" versions. I used some statistical methods like low-pass and high-pass filtering to try and remove the noise in these noisy ...
0
votes
1answer
16 views

Mediator variable turn insignificant in the c' relationship

Dear all, I am currently running a mediation analysis and I'm running into some trouble interpretting the insignificance of the variables. - When running a regression for path A, this is significant ...
0
votes
0answers
30 views

Comparing clusterings of different spaces

I have developed a graph embedding method that learns feature representations for each node in the graph based on the graph topology. I want to demonstrate that the learned feature vectors yield ...
0
votes
1answer
51 views

Business Productivity: How do I measure workflow changes' effects on number of work items completed?

I am designing an experiment to measure the effects of two different workflow modifications, individually or combined, on overall group productivity. The null hypothesis is that the modifications ...
0
votes
1answer
28 views

Regression with NA output for external variables

I have a data set with multiple variables containing both internal variables (sales, employees, assets, business type, gender, age etc) for 180 companies and some external variables (like GDP, CPI, ...
0
votes
0answers
11 views

A good performance measure for analysis

I have 5 APIs which gives distance and duration as outputs by taking a origin and destinations. I have a set of input values, and I have five sets of outputs for these input values from the 5 APIs. I ...
0
votes
1answer
31 views

Which statistical analysis test is more appropriate to calculate p-value?

I am trying to determine if the increases seen in gene expression from a certain time-point to another are significant or due to biological variation. I know that I should calculate the p-value but I ...
1
vote
0answers
33 views

Why an independent variable in univariate logistic regression it isn’t significant but in multivariable is significant;

I have a dependent variable $Y \in \{0, 1\}$ and 4 independent variables $X_1$ through $X_4$. First, I run a total of 5 logistic regressions: $Y \sim X_1$ $Y \sim X_2$ $Y \sim X_3$ $Y \sim X_4$ $Y \...
0
votes
0answers
26 views

Error on a probability with unknown distribution

This question is broken into a couple pieces. I'll go through my approach to puzzling out the question and am looking for some help on places where my logic is just off. I have a biology experiment ...
0
votes
0answers
14 views

Principal Component Analysis or Confirmatory Factor Analysis?

I have used a three-factor 21-item questionnaire to learners to assess one feature, but I realized that some of the items of this questionnaire may not fit my context and should be omitted. How can ...
1
vote
0answers
37 views

Determine relationship across two variables in simulation result data

I need help, but I do not know the specific terms that describe what I want to do, but I will explain as much as possible. It is most likely the reason that I have not been able to get what I want, in ...
0
votes
0answers
20 views

best model for geopgraphical distribution of a characteristic prevalence

I've data about the presence of a specific allele E4 among different geographical region populations (e.g. nord,...
0
votes
1answer
20 views

Interpretation of regression results related to demographic similarity

I am researching on studies related to the effects of demographic similarities. However, I found many interesting studies related to demographic dissimilarities and wondering whether I could ...
0
votes
1answer
41 views

How can I apply a Logistic Regression model in real life? [duplicate]

I just run a LR multivariate analysis to class probability check. From this analysis I could see that the combination of 4-variables would increase my test accuracy. Here is the output of this ...
0
votes
1answer
21 views

Comparing 3 means from 1 sample

I'm trying to compare mean interest levels of 3 products. The same sample was asked about each of the three products. How can I test for equal means among the three products? Other information: ...
1
vote
3answers
85 views

What kind of statistical model I should use?

Here is the project that I'm currently working on it and would be more than happy if I can get your opinion about it. The project is about dispatching the EMS helicopters to the incident locations to ...
0
votes
0answers
18 views

What type of research design is this?

I would like to work on a study regarding satisfaction level of of the students on school services. I am planning to conduct a survey. After I'll get the survey results, I would like to interview few ...
0
votes
1answer
28 views

Useful data analysis methods for engineering applications [closed]

I'm currently working on a dynamic simulation of an already existing product. The simulation is supposed to help in future development of this product by enabling the engineers to get a better ...
1
vote
0answers
24 views

What types of analysis will work on a dataset of medians?

The dataset I currently have is wages for different occupations across different geographical regions, however each observation is a median. For example, a doctor in region A, the wage reported would ...
0
votes
1answer
167 views

3x2 between subjects design

I have a research design where I have two IV's. One is processing type (high and low) and the other one is word load (small, medium and large). I am trying to figure out how to analyze this set. I ...
0
votes
0answers
20 views

Can I sum two differents variables, with differents scales and different distribution with z-score?

I was searching about this question and i found this, but I don't really sure about that. I think this is correct when all variables are normally distributed, my problem is here
0
votes
1answer
28 views

Appropriate Method To Compare Groups

...
0
votes
1answer
23 views

Measuring the effect of a variable across a threshold

Within my data I am trying to assess whether the response variable increases as we move across different thresholds. The difficulty is that the response variable also increases exponentially as a ...
0
votes
1answer
35 views

How do I analyse proportion data when the response can be slightly greater than 1 or less than 0

We routinely examine than fluorescence of leaves (using a technique called PAMMING - pulse amplitude modulation), with the response being measured as a true proportion (between 0 and 1) i.e (Fm-F0)/Fm....
0
votes
0answers
32 views

How to get a threshold value?

I have a dataset of genes and their frequency in the dataset as: Target_Gene:A,B,C,D,E,F,G,H....,Z Count:260,150,120,90,50,40,36,27,.....,1 Now I take a Sample from this: Target_Gene:A,C,F,J,K.......