# anova

1. ### Seek for Statistical Test of Variability Contribution Percentage of Multiple Factors

Hi, I need statistical test which would tell me which percent of variability in dependent variable is from given independent set of variables and which of unknown ones. Example: Model: Y = Model (X1, X2, X3, ....) Measurements of Y, X1 and X2 are given. I need test which tells me the portion...
2. ### [Combining data][2-way between-groups ANOVA]

Dear smart people, I am currently finishing my Master's in International Business Communication and I am wondering if I can combine data to increase the power of my stats. For my research, I did the following: -A 2x2 between-groups design, with as factors Fashion_Interest (high, low) and...
3. ### Anova: Components of variation in population (notation in Doncaster and Davey)

Hi I am reading Doncaster and Davey's 2007 book. The book lists the appropriate ANOVA/ANCOVA models for combinations of nested and crossed factors. While I think the book to be a great practical asset, I am confused by the authors' notation. For each model they provide an anova table...
4. ### 3-way ANOVA with unequal sample sizes (between-groups)

Dear smart people, I am currently finishing my Master's in International Business Communication and have run into a problem with my data. I was wondering if you guys could maybe offer me some guidance on how to proceed? For my research, I did the following experiment: In a...
5. ### Which test to use for three categories of frequency data?

I have three categories of data (no change, uplisted, down listed). For each category I have a value for the frequency of occurrence. How do I compare these frequencies? It is essentially a one-way ANOVA type analysis that I want to do, but since the data are frequencies not means this test...
6. ### ANOVA for three different time periods

I have three different time periods of sales data of 4 weeks apiece: weeks 1-4, 5-8, and 9-12. During weeks, 9-12 we attempted a test that may have affected sales. Can I compare weeks 1-4, 5-8, and 9-12 with ANOVA to determine whether or not they have significantly different means? I...
7. ### two way anova?

Hello. I am hoping you may be able to help me understand why this is a two-way anova (it is possible it isn't) The assignment gives the following research question (1) Is there a significant difference in the walking behavior of students who were administered the HYPPE (exercise) program...
8. ### What is the appropriate test for testing the difference between 3 variables?

Hi all, I have a group of n subjects. Each subject has 3 measurements x, y, and z. 1-What kind of statistical analysis I should perform to see if those three measurements are significantly different or not? (units are the same for all variables) 2- I can tell by visual inspection that...
9. ### Welch ANOVA and covariates

I had planned, because of lack of homogeneity of variance for some of my variables (homoscedasticity) to run a Welch's ANOVA and to use bootstrapping. I also have a number of covariates proposed for the (original) analysis. The Welch's ANOVA is only available for one-way ANOVA's on SPSS (no...
10. ### Need help to choose right statistical analysis

Dear all, I have one dependent variable (Y) and 3 independent variables (X1, X2, X3). All dependent and independent variables are continuous. I want to know which independent variable (X1 or X2 or X3) is a predictor of the dependent variable. If they all are, whether they are independent...
11. ### Choosing Appropriate Statistical Analysis: ANOVA vs ANCOVA

Dear all, I have one dependent variable (Y) and 3 independent variables (X1, X2, X3). All dependent and independent variables are continuous. I want to know which independent variable (X1 or X2 or X3) is a predictor of the dependent variable. If they all are, whether they are independent...

I'm asking a group of young people who have experienced loss to complete the Posttraumatic Growth Inventory and then a sheet about different factors identified in previous research (age, gender, support network, religious beliefs, etc). I then want to see if there are any correlations between...
13. ### Pre and Post with Treatment group - ANOVA , ANCOVA, Regress differences???

Hello friends, My main task is to "test" if staff member who participated in the counseling sessions had fewer "Use of Force (UOF)" incidents in the 6 moths after the counseling session. I have a data set with the number of UOF incidents for the staff member in the 6 months before (pre) and...
14. ### Difference between expected spending and observed spending. What kind of statistical

I would like some advice from you about what kind of statistical analysis I could do about that data. My case is as follows: According to a research I have the information that the financial health of the company for a specific type of activity should put the following percentages on...
15. ### Help for mediation

Hi, my research question is: "Can we say that the number of hours of Internet use increases with Internet purchase? This influence of Internet purchase on the number of use can it be explained by an attitude becoming more favorable to as we know Internet? " my variables are: - Use of Internet...
16. ### ANOVA RCB design; multiple items in groups

Good day! I have a study that seems to fit the criteria for an ANOVA using a randomized complete block design. The research is on the effect of one drug on a blood parameter, but we assume that another measurable factor also affects the blood parameter (hence our blocking). Yet, we cannot...
17. ### Which analysis for incomplete block design with repeated measure?

I have a question on analyzing data from an incomplete block design. Participants have been randomly assigned to 1 out of 8 procedures each consisting of two cases. The cases differed on three variables (all nominal). Cases were counterbalanced in such a way that if a participant was assigned to...
18. ### How to apply Chi Squared test according to this Simulation?

Hi there, I have been wondering about some points of Chi squared test. I would like to introduce the following scenario to better clarify my question: Let's say that one day while doing research on the city of Villy God has appeared to me and told me that city there are 10,000 adults...
19. ### Paired samples t-test for an interaction

Hi all, I'm currently writing up my final project for university. The general idea is testing the role of language on emotion perception in faces, with the hypotheses being that emotion words will facilitate more accurate perception of emotional faces than do neutral words (i.e. more correct...
20. ### Anova or Chi Square for checking significant related effects

Hi, I am a newbie to Data Analysis and would be thankful if you could explain to me if for this exercise I use Chi Square or Regression ( looking at the ANOVA table). For each what would be the specific steps? For example for Regression which is the dependent variable, etc. Exercise...