statistical analysis

  1. 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...
  2. J

    Regional analysis of disease risk factors

    I'm working with a large data set looking at climate variables e.g maximum, minimum temperature etc to see whether these could be risk factors for the regional variation for a sheep disease in 5 different regions within a country. The dependent variable is disease count (number of cases)...
  3. E

    Identifying relevant predictors and interactions

    I have a data set comprising of 12,000 observations and 1,100 potential predictors (continuous and nominal) for a binary outcome/target variable. The research question is to identify interesting predictors and interactions for the binary outcome/target variable. Given the large number of...
  4. L

    Choosing test for dependent anonymous sample comparisons

    I have data collected each year from 2010-2015. In this data I have demographic information and a self-reported score on a 5 pt Likert scale. The surveys were anonymous but I know that many of the same people were surveyed each year. I would like to compare the self-reported score across years...
  5. M

    Similarity, Dissimilarity Test

    Hello all, I am a graduate student. For my research, I am dealing with traffic data of different time period (such as June 2014 vs July 2015) of the same road at rush hours. So I have a set of data from June 2014 and the data for the same road during rush hours at July 2015. Now I would loke to...
  6. S

    Comparing categorical and numerical results simultaneously

    Hi all, This question is in regards to options for analysing a dataset. I have a dataset where we have 23 video clips that have been treated using three different algorithms to change how each clips looks. Each treatment has then been viewed by a number of scientists to try and identify the...
  7. M

    Probability of goals in a football match?

    I am trying to work out the probability of teams scoring a goal in a football match. Obviously there are many factors to consider, and the probability is impossible to predict correctly as there are many factors that will change in a football match. However i want to figure out the probability...
  8. 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...
  9. G

    Finding degree of difference

    I am given two sets of data collected by two different people. The data in includes the variables area, production and productivity of coconut. Now, how do I find the degree of difference? This topic is completely new to me. The data collected by both do not seem to be comparable. The area...
  10. N

    Assistance Requested in Determining the Appropriate Statistical Analysis

    I am developing a mock research proposal. The study will be a RCT of 100 women from a health clinic. Both groups complete an initial questionnaire as well as a follow up questionnaire (same as the baseline minus the socio-demographic portion). Both are asked to set up an appointment for a cancer...
  11. C

    Estimating Multilevel Logistic Regression Models

    The following multilevel logistic model with one explanatory variable at level 1 (individual level) and one explanatory variable at level 2 (group level) : \text{logit}(p_{ij})=\pi_{0j}+\pi_{1j}x_{ij}\ldots (1) \pi_{0j}=\gamma_{00}+\gamma_{01}z_j+u_{0j}\ldots (2)...
  12. R

    Need quick help for completing thesis in time

    Under statistical analysis this was the revised statement from my professor i cant understand what the % of cases mean ? Is it the number of participants? there where many participants,but i selected only a group of participants from the data set. Can someone help ? SPSS for windows (IBM...
  13. Y

    Help on stats for research model needed

    I am in need of a quick statistical advice for a study I planned, and I hope you can help me a bit with it. I'd really appreciate your expertise. The research is on nudging (subtle psychological manipulations). My model is attached to the post. The model looks kind of funny, so let me...
  14. S

    Mann Whitney U test and Spearman test using GraphPad prism 6 interpretation

    I have analyzed two biological sample (Soil 1 and Soil 2) by Mann-Whitney U test and Spearman test using GraphPad Prism 6 software. I got following result For Mann-Whitney test Table Analyzed One-way ANOVA data Column B Soil 2 vs. vs. Column A Soil 1 Mann Whitney test P value < 0.0001 Exact...
  15. S

    What statistical analysis to use for a ordinal scale questionnaire?

    Dear Experts, Im a noob when it comes to statistics. So please pardon my lack of knowledge in this post. I need to do a statistical analysis on a set of questionnaires. There are 3 sets of questionnaires for 3 different populations (Human Resource Reps, Managers, Employees). My hypothesis...
  16. J

    One-way ANOVA and planned comparisons - HELP!

    Hi all, I'm currently running a Psychology experiment: the effect of background music on memory and mood. I will be using SPSS to conduct two one-way ANOVAs (music + mood / music + memory), w/ planned comparisons. However, I also want to see the effect of mood on memory but I don't know how...
  17. S

    statistical analyis of weather data

    Hello, I made ambient temperature and relative humidity measurements using a sensor, next to a highly accurate meteorological station and i want to test the accuracy of my data in respect to the meteorological station (assumed as the "true" value). Practically, I have 2 sets of data, one...
  18. M

    Benchmarking and Statistical Difference

    Hey everyone, I have a few issues and would really appreciate your help :) Thank you very much ! So here it goes : I have two levels ( A and B ), in different fiscal years ( 2007 - 2011 ) and approximately 15 variables. I would like to calculate the mean, variance, kurtosis and...
  19. Eaners

    Choosing an appropriate test: MANOVA? ANCOVA? Something else?

    I am performing a "dry run" statistical analysis on my dissertation data pretest, and I'm looking for a little guidance regarding the specific analyses I need to perform. I have three primary variables: Environment. Categorical, 1 of 3 conditions. Independent, assigned by experimenter...
  20. C

    interpretation of intercept and regression coefficient

    This is a multiple linear regression problem with two independent variables. dependent: blood pressure independent: stress and age The raw regression coefficients for x1(stress) and x2(age) are 1.373(stress) and 0.581(age) The intercept is (0,68.969) I need to interpret the values I...