data analysis

  1. 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...
  2. E

    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...
  3. 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...
  4. S

    Analysis of data - how to find the most relevant factors

    Solved. Sorry... You can delete it.
  5. 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...
  6. W

    Multinomial logistic regression

    Hi, I'm quite new to R and I need a little advise on whether multinomial logistic regression is right for what I'm hoping to do for my data. Basically, I've been given some camera trap data to work with. The data is non-normal and consists of 25 species documented over 30 different trap...
  7. E

    How to compare increase in price from different samples?

    I have data samples of home sales of N different cities, and I want to find the city with the biggest increase in average prices between 2012 and 2015. How could I compare these cities while taking into account the difference in number of transactions? City 1 Sample: Year, Average...
  8. C

    Analyzing Sleep and Productivity Data

    You are given data that stores the hours that an individual slept every night between the data's start and end points. You are also given the individual's task lists for each day between the data's start and end points (the tasks that were completed are checked off). What logic could be used...
  9. D

    Which statistical test should be used?

    Take a quiz and refresh your knowledge in selecting the appropriate statistical test/procedure to answer a given research question. This assessment (25 MCQ+ brief demographic questionnaire) is designed for graduate students in social and behavioral sciences and developed as a component of a...
  10. J

    Reading dataset stored in vector form in R

    I am new to R how can I read a dataset stored as vectors and with comments in it into R? See Attached. Thanks in advance.
  11. N

    Compound poisson gamma model and biomass data

    I have some biomass data (total count -discrete- of individuals and total dry weight -continuous-) that I would like to model with environmental parameters recorded at different spatial scales (temperature -continuous-). My biomass data is zero inflated mainly due to scale inaccuracy and as a...
  12. C

    Methods and Data Analysis for Experimental Study Design

    Good day! I am working on my methods section for my dissertation proposal and want to ensure I am thinking through my methods and data analysis correctly and using the appropriate statistical tests. I plan to collect data this fall. Thank you! Purpose Statement This purpose of this...
  13. P

    Learning analytics

    Hi all. I am a newbie to data analysis. I am an online learning facilitator for an online seminar-based program for local high school students. Since it is a 100% online program, there are no face-to-face sessions. They have to complete online short quizzes (1 question per quiz, 2 to 3 quizzes...
  14. T

    What is the best way to determine the convergence of data?

    I'm doing some research with Matlab (materials science related), and a lot of my work involves statistical analysis, of which I'm not super familiar with (so I apologize in advance if I'm not using proper terminology). For this project I'm measuring some data, and I want to come up with a way to...
  15. M

    what is the objective of yeast dataset?

    Recently, l started working on yeast data (http://archive.ics.uci.edu/ml/datasets/Yeast). My goal is to do an exploratory statistics upon these data, l applied PCA (principal component analysis ) as a tool of analysis. However l'm not aware of the objective of yeast data , l finally found some...
  16. rogojel

    What does Python offer that R can't?

    Hi, I am looking at Coursera data anlysis specializations and most (basically all except John Hopkins) offer Python as the language of choice for their courses. I really like R but I started to wonder if I am missing something? I just see no advantages in Python for data analysis, that would...
  17. E

    How to measure- effect of additional categorical DV on repeated m. ANOVA?

    Hello, I am helping a colleague analyze data from a user study. I am a little unclear how to deal with one of her measures. I would greatly appreciate any help! Description: Independent variable: -interface modality: -audio (A), visual (V), haptic (H), control (C- no interface) Main...
  18. L

    SPSS coding question

    Hi everyone. I'm a little confused as to how I'm supposed to recode a specific item based on the coding of the item proceding it using SPSS. I've attached the specific case I'm referring to to this post - it's Item 8 from the SF-36 health survey. Any help would be greatly appreciated, thanks.
  19. C

    Statistical significance of deviation from a complex-valued model

    I have complex-valued data. At each one of about 100 linearly spaced x values, I have a corresponding measurement of a complex quantity with well-defined Gaussian uncertainties on both the real and complex parts. For the simplest applicable physical model, the data should be described by a...
  20. C

    [Excel] How to keep track of metrics

    I have a data table with 3 Columns that I want to be able to measure the performance for. Ex. Number| Stage | Date/time 111111 | First Stage | 06/25/2015 10:00 AM 111111 | Second Stage | 06/25/2015 11:00 AM 111111 | First Stage | 06/26/2015 09:00 AM 111111 |...