statistical analysis

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    4 variables, 2 surveys.. how to link? please help!

    hi :wave: i have 2 surveys. The data is collected from both managers and subordinates, the first one has just one variable (moderator) and the 2nd has 3 variables (mediator, independent variable and dependent variable ) i have 1 independent variable , 1 moderator, 1 mediator and 1 outcome...
  2. A

    How do you define a statistical way to ensure that the worst case are captured??

    I need a recommendation which addresses the variability of results. There is variability associated with these results. What I specifically need is help to define a statistical way to ensure that the worst case is captured, which can then be used in future testing and we can be sure that we...
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    How can confirm the data in the table is statistically significant?

    Hi, Please find the table document. https://www.dropbox.com/s/s22obnlizefeejj/stat%20check.xlsx Numbers in bracket refers to number incidents in a particular stages occurred over months in a year under each category C1, C2, C3. Total number of INCIDENCE is 240. January month incidences (142 +...
  4. R

    Weighted Kappas...please help!

    Hello! I've looked all over regarding how to do this but am still coming up short. Please help! I have 16 data points. I have provided the weights!! Please help! This is huge!!!! Data Point Weight Component 1 .33 A 2 .66...
  5. O

    Making sense of the data...Data analysis

    Dear Experts, I have data for a 12 months study done on 2 wastewater (Plant A and Plant B—Final Effluent and Discharge Point) treatment plants. Physiochemical (13 parameters tested) and Microbiological(bacterial) data were collected. Also there is the recommended standards against which all...
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    Time series analysis with external events in R

    I have a time series of daily website visitors and several different marketing events (some continuous for several days). I would like to determine what impact did those marketing events have on website visitors dynamics. What approach would you suggest in terms of analysis ? I'm working with R...
  7. R

    How to create an unbiased fit to the data (Keyboard log data for each user)

    Hi all , So I have a very simple distribution of events (eg user keyboard log for five employees). Now if suppose I consider frequency of each key pressed for a single user, and for all users. And then suppose I want to see what distribution this data follows ( without any bias toward any...
  8. M

    Which test to use

    Hi all I am a language teacher, and, like many of them, I am unaware of the test I should you for statistical analysis of the data available with me. In fact, I want to see which of the skills my students are good at, and which one they are poor in. I have data for five skills, i.e. Writing...
  9. L

    Hierarchical Regression Analysis - is this the correct technique

    I am proposing a study to find out whether cognitive restraint, disinhibition and hunger predict weight gain in pregnancy. However, I know from previous research that this effect differs depending on BMI category. Am I correct in saying I could use a hierarchical regression analysis, where...
  10. A

    How to analyze survey data with three levels of data in SAS?

    We analyze data from a European survey (34 countries ) for quality of life , the sampling procedure is described as a " multi-stage stratified and clustured sampling design " . Our outcome variable is binary. There are three levels of data to be taken into account (individuals, regions...
  11. N

    Tomographic map of 3D data with a dimension described by probability distribution

    I have a three dimensional data set. Two first components are the exact values of(X,Y) and for the third dimension I have a probability attached to each point for each given value of z between (0,1.5). for example P(x0,y0,z0)=0.24 and the probability is not necessarily Gaussian, it can be...
  12. L

    statistical Analaysis? NEED HELP... URGENT!!!

    I am working using secondary data that was originally collected for another purpose. The data is from a teen pregnancy program among Latino youth. The program had a control group and an intervention group and collected baseline and follow up data from both control and intervention. the...
  13. L

    Investigation outliers, could data mining be a solution?

    Hi everyone, This is my first post. :wave: I am currently working on a project to investigate the reason for why these providers are outliers on the dataset on a whole. I am finding it very tricky to find statistical methods that "investigate" outliers- as in show you why they are outliers...
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    something like a paried t-test for dependent variables

    Hey, can anyone recommend a test for the following problems. 1) Say I have repeated measurements x_1,...,x_n and y_1,...,y_n such that each measurement may depend on the past. How can I test whether the means in both tests are equal, i.e. mean of x_1,...,x_n equal to mean of y_1,...,y_n ? I...
  15. C

    urgent stats help

    I need some help desperately. I would like to find out whether there is any difference between three conditions using a t test (I dont know if I need an independent or paired t test), and have tried this in SPSS but cannot seem to make sense of it. Basically I have 6 participants who watched...
  16. V

    Statistical Analysis: Which measure of association for me?

    My research hypothesis claims that there is a relationship between my independent variable, student’s economic status and the dependent variable, SOL test scores. the null hypothesis states that there is no relationship between the two variables. This is quantitative, and it is discrete. This...
  17. C

    Statistical analysis on online betting industry?

    Hi! i'm currently working for an online betting company and i would need some help on how to come up with risk indications. I believe some statistical tools may help me assess the gravity of risk of a certain event or user. For example: 1. a certain player bets on an average of 100 per bet...
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    How to statistically analyse this experiment? Also confused about IVs/DVs, pls help!

    Hi, I'm doing a hypothetical test, so if it doesn't make theoretical sense, just ignore please! :D The study is longitudinal one lasting a year in which memory skills of children are assessed with a test quarterly. So at the start, 4 months, 8 months and at the end. The study is...
  19. D

    Chi Square, Likert Scale, and Within Group - reasoning

    I am hoping some really smart folks can answer this question for me and provide some sage and learned advice to help me finish the last piece of my PhD dissertation research. Background: I have completed a data study, using a Likert Scale (1-5), on importance of an element within an...
  20. O

    Statistical analysis of Profits - use of U-test

    Hi We have been working on a project where we have 2 or more trading agents on a market stock and for the outcome we have the profits that each trader generated after running 1000 times or more each market session. We need to statistically compare the profits of this traders to know which one...