statistical test

  1. P

    Which statistical test to use?

    Hi, My Chinese friend and I are trying to answer the following question: What are the mean weasel body weight per habitat and age class, for males and females, in the different seasons? We are still wondering which statistical test would be most appropriate. Crosstabs (Chi-square)...
  2. S

    SPSS: Which chi-square test should I use for one nominal and one ordinal variable?

    My hypothesis is Gender and opinion on smoking is associated. I am using a likert scale (Strongly disagree..strongly agree) for the statement 'Smoking makes you look cool'. In SPSS, I have coded gender as nominal and the opinion as ordinal. I have to use a chi-square test but dont which box...
  3. M

    Which statistical test to use? Compare 5 categories with data (ratio scale)

    Dear all, I desperately in need! I have two samples (reports of 30 good and 30 bad companies). For each sample I classified statements in five categories (one being the "best" category, five being the "worst" --> ordinal scale). Within the categories, I have absolute frequencies. One example...
  4. S

    Statistical Test - Which one

    Hello everyone, I want to make one analysis to understand the behaviour of some stores: if there are some similars, which one are similars, etc. i am not sure about which statistical test i should use to solve one problem that i have. I have a data set with N stores and for each one i...
  5. J

    What statistical test do I use for this?

    Here's the data I have... I have a "national" sample (the control) showing the actual number and percentage of people in the sample that have a specific characteristic. Let's say there's data on 10,000 people that are all classified as either loving cats or hating cats (Yes or No). I then...
  6. C

    Help on our research

    Please help me determine what statistics should we use IV= Dimple Placement/location, 6 kinds of dimple placement EXAMPLE PIC of our questionair: http://oi61.tinypic.com/350tfg4.jpg DV= Level of attraction Our questionaire looks like this the Picture of the guy with diff kinds of...
  7. H

    Statistical test to use

    Hi all, I really need some help on deciding what stats test to use :) I have conducted an experiment looking the what effect wearing minimalist shoes for eight weeks has on three walking variables (stride length, Stride frequency and walking speed). All participants came to the lab to have...
  8. T

    Choosing the correct Statistical test

    I am writing my first year project about working conditions in Denmark and have done some statistical analysis. But I am in doubt whether I have used the right methods. The reason behind my despair is my absent teacher which resulted in a huge lack of guidance. (Enough self-pity) My problem is...
  9. B

    Which test to use?

    I have 3 groups-A, B, C. No. of respondents in each group A-120, B-120, C-30. Each group has an index about a topic. There are 14 such topics. In short, 14 indices of A, B and C. What is the statistical test to find if there is significant difference between the indices of the 3 groups...
  10. A

    What statistical test do i need to run?

    Hi there folks, I'm having a little difficulty choosing what statistical test i need to run, I've conducted a series of behavioural experiments, that involves three different groups; yet all have the same individuals. The trials are based around recording behaviour both before and after the...
  11. S

    Which statistical tests should I use?

    Overview of Study: Independent variable: Time Dependent variable: Number of alcohol references in music Three hypotheses: H1: There will be a significant increase in the number of alcohol references in country music over the years. H2: There will be a more rapid increase in alcohol...
  12. M

    Correct statistical test to compare pre and post questions (dummy variable)

    Hi friends, What is the correct statistical test to compare a group who was tested in two points in time (pre and post) The same people. I have a dummy question that was asked in pre and post test (exact the same question): 1=correct to the questions 0=incorrect I want to see if there...
  13. F

    Cluster analysis - using statistiXL package for excel - how to determine a cluster

    Hello, I have a fairly basic question. I've used the trial package of statisiXL for excel to run a cluster analysis on the following data: 9 elements (Na, Ca, etc..) were measured at 100 occasions, so 900 measurement points in total. All have a similar range. Used settings: Quantitative...
  14. L

    Testing Difference of Values from Lognormal Distribution?

    I have data that fits a lognormal distribution really well. My primary goal is to create a statistical classifier using this distribution to apply to new data from the same source. Essentially, I have 2 possible values, I choose the bigger one (based on the lognormal density) and then attach a...
  15. D

    How to analyze the change in incidence over time?

    Hello I am studying the change in incidence of a specific type of surgery over time. I have 1 independent variable which is YEAR (continuous), and one dependent variable (rate of surgery/incidence per 100,000 population). There is a downward trend observed, but I would like to analyze it...
  16. M

    Statistical test and power

    Thank you for your help! I am having trouble understanding what statistical test I can use, in order to figure out a power analysis. I want to prove that an animal is capable of vocally matching a stimulus. So I have a pre-recording of the animals call, a artifical call played to the animal...
  17. S

    Parametric or non-parametric for 2 sets of data being compared one normal one not

    Hi folks, I am in a dilemma and maybe one of you can help. I have 2 sets of data, one from a control group and one from an experiment group. Each group took a test before and after a period of time and difference calculated. When checking for normality within the data via Anderson-Darling I...
  18. F

    small sample size

    Hi everyone! Nice to meet people do same things on the web:) Here the question: I have independent two group of patients first group have 10 patients second have 5 patients can I compare their surgical corrections (advancement measured as milimeters) with ManWhitney test? (since the...
  19. D

    Likert Scale Help

    Hello everyone! I am in a statistics course and writing my first research paper using my own data analysis and I could really use some help determining what statistical test to use. I am using STATA and ANES data. All of my variables are likert scale variables which I have coded -3 to 3...
  20. M

    comparing frequencies

    I have a survey question that asks which of 3 activities participants regularly participate in. They are told “select all that apply.” So they can mark any or all of the activities. As results, I get frequencies (# and %) for each activity. Now I want to compare the frequencies of the...