data analysis

  1. L

    Biological data analysis of settlement success in coral

    I have no idea how to run any statistical tests on the following data. This is the experiment I ran: I exposed corals to a chemical in lab. Every day, I collected the coral larvae from the coral every day for 3 weeks. My advisor had me then pool the larvae from the same treatments, and score...
  2. L

    Data analysis in R on path data.

    Hello all. I am working on a data base collected by walk/path observations in animals. The data is recorded as coordinate X and Y. Do you have any suggestion about which R package I can use and which analysis would best to test different between different conditions. For now I found a nice...
  3. M

    Statistically Significant Data for Test Engineer

    A common engineering experiment is to test something until failure to determine its ultimate break strength. Sample sizes can range from 5 to 100 pieces. I would like to know what statistical tests are used to make sure the data is good. Statistical tests that I am aware of are used to...
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    Need help selecting appropriate tests for assignment

    I've had a bit of trouble with these questions. Basically I have a heap of data sets from a survey that I need to run tests on in a statistics-based program called SPSS (t-tests, regressions, etc.). I'm very stuck on what test to use for the questions below. If anyone has any ideas on what test...
  5. S

    Fixing behavioural difference of demographics

    Currently collecting employment/working satisfaction data from survey at different countries. Same set of questions is used. I have come across that people from some countries tend to be more optimistic/pessimistic than others. How can I take their answering behaviour into consideration when...
  6. S

    Fixing different demographics behaviour on survey data

    Currently collecting employment/working satisfaction data from survey at different countries. Same set of questions is used. I have come across that people from some countries tend to be more optimistic/pessimistic than others. How can I take their answering behaviour into consideration when...
  7. S

    Method/test to use analyzing survey

    What type of analysis to do on staff engagement survey to find root cause of problem? Questions covers trust, well being, working environment topics. Answers collected are in 1-5 scale, 1 being strong agree. Method used so far is finding correlation between the questions. Any other...
  8. S

    PyCM : New statistical analysis library for post classification in Python

    A classifier is expected to face with many datasets with different characteristics such as being unbalanced. Besides, their missions are different, for example, categorizing data into just two classes or more than two. There are many different parameters for evaluating the performance of a...
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    Help URGENT deadline!! What data analysis method should I use to test the effect 1 variable has on 3 other variables ?

    Hello, I’ve just joined and am in need of any help that I can get. Basically I wanted to test whether phubbing ( snubbing someone to use your phone) impacts relationship satisfaction, sense of self-worth and respect for your partner. Does anyone know what statistical analyses I would need to...
  10. L

    Need Help with Data for Regression

    Hi, I am working on a replication of a research paper where I have to compile my own data to copy the regression done in the research paper. I have never done a regression like this before and I am not sure about the data I chose - I would appreciate any help and input. All the variables I...
  11. R

    Statistical analysis of scientific data

    Dear All, Hi, I am doing PhD in the field of material science. I want to know what kind of statistical method I can apply to interpret results of my experiment. Suppose, I have 30 samples and there are about 15 properties associated with each of these samples. With this post, I want to attach...
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    Survey Data Analysis

    Hello, I am interpreting some data that was calculated by someone else and initially I was confused how this person got these numbers. So I emailed the office that oversees the analysis of this information and their explanation still left me a little confused. Hopefully someone can clarify...
  13. M

    Factor Analysis (categorical variables)

    Hi everyone, I need to run a factor analysis on a few nominal variables. They have no defined order, therefore, I cannot use polychoric correlations to create a matrix. My variables are coded such that: 1- respondent 2- husband 3- In laws and so on. I have eight variables and will...
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    Calculating representative value for data

    Assume there are ten data with values a_1, a_2, ..., a_10 each with different non-symmetric errors. The problem confronting me in brief is, to combine the 10 results a_i and their associated non-symmetric errors according to some acceptable precept so as to determine the value of a and its...
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    vibration signal_prediction

    Hello, I have a vibration data coming from a motor. i am using R program to do the predictive analysis. My vibration data is a white noise (mean and variance are constant). I need to use this vibration data to do the prediction. How do i use this signal for prediction? Do i need to do some...
  16. R

    Problem with normalization and - proteomics analysis (LC-MS)

    Hi folks, I am working with proteomics data, containing mainly LC-MS and NMRI analysis. Firstly, I must normalise data to give valuable compound for biostatistics analysis such as data imputation. I have never had to deal with such data. Can you advise me on which method to choose (I usually...
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    How should i use this dataset?

    Hi all! I'm trying to figure out which way I should deal with my data I have data sampled from 2 "general areas" on opposite sides of the country. in these general areas there are roughly 50 trakts placed (in a grid, random staring point) A trakt contain 16 sample plots. Trakts have been...
  18. B

    Anova with data reduction? (Experimental design)

    Hi, this is my first post, I hope to do nothing wrong like posting in the wrong area.:pag It happens that I did an experiment where I have a control group and an experimental one, I am comparing means with ANOVA, and I want to reduce the data by eliminating 5% of the lower and higher data...
  19. S

    Analysis of data - how to find the most relevant factors

    Solved. Sorry... You can delete it.
  20. P

    Data input- ordered logistic regression

    Hello, I am trying to analyze the relationship between mode familiarity and Technology & demographic characteristics. So I have an ordinal dependent variable and binary, ordinal, continuous and nominal variable as independent variables. My output variable is the familiarity of mode: very...