anova

  1. P

    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...
  2. C

    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...
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    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...
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    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...
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    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...
  6. S

    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...
  7. K

    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...
  8. T

    ANCOVA or oneway-ANOVA on gain scores

    Hi everybody. I'm curious to know which is the most correct/preferred method to analyse my data. I've got a randomised clinical trial with three groups(placebo(n=24), low dose(n=21) high dose(n=21)). There is pre and post measures on a 40+ continuos variables. I've performed ANOVA at...
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    Need help formatting my Data!

    Hello All, (Please be prepared for minimum knowledge on my behalf!) I am currently doing some research for university so time is of the essence! I am looking into how prominence (Subtle & Prominenet) and humour (Funny & Not funny) effect product placement effectiveness. Now i have...
  10. C

    What Kind of Test?

    Hey guys, I was wondering what is the best type of test for this: I'm investigating vegan identity. I have calculated an "integration score" for each individual and am seeing how factors affect that. I want to see how familial support affects the integration score of females only. Would this...
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    Anova find significant diferrences

    Hi all, I have made an one-way anova in order to test if three populations have the same means. My result is to reject the null hypothesis. So, I understand that at least two populations have different means. I would like to compute the significant differences and then to find which...
  12. K

    How to calculate the percentage contribution in full factorial and RSM models

    Hi, My question might seem quiet straight forward but here it goes: How can I calculate the percentage contribution of each input parameter in full factorial and RSM ANOVA when I have four input factors: This is what I usually do: For Full factorial with four inputs I divide the seq...
  13. S

    Factorial experiment in CRD with unequal replications

    Hi guys, i am a graduate student in statistics. i want to test for the main and interaction effect of 3 treatments on a group of patients. let say i have treatments A, B and C. each with 2 levels, presence and absence. So i decided to perform a 2^3 factorial Experiment in a Completely...
  14. M

    Anova or t-test on squared errors

    I have two forecasting models, moving average and single exponential smoothing. The values of Mean Absolute Percentage Error (MAPE) is 5.2%, 5.8%. Since the difference of MAPE between the models are very close, I am quite confused which model to choose. Can we perform a t-test or ANOVA on...
  15. S

    Is ANOVA applicable for my study?

    Hi, Here's some info about my study: Looking into stereotype threat and mapping ability, hypothesising that females will perform less well than males when gender priming is used. Stereotype threat suggests that people perform less well in conditions whereby they belong to a group that...
  16. M

    Which test to use for these variables and their associations

    Hey, I have some questions about which test I can or have to use. Which test do I use to only identify if there is a relationship between those variables? I only want that to know, for the identification of confounding factors. Ordinal dependent categorical variable <-> ordinal...
  17. S

    Anova

    I am trying to find the effects of feed rate, cutting speed and depth of cut on surface roughness. I have five sets of feed rate ( 0.09, 0.10, 0.125, 0.150. 0.175), four sets of speed (41, 53, 66, 82) and two sets of depth of cut (0.5 mm and 1 mm). Like: 0.09-41-0.5 = 3.65 0.09-53-0.5 =...
  18. M

    P-Value in overall ANOVA vs. TukeyHSD

    Hey Everyone, I've been learning stats on the side and have some difficulty understanding the different methods of comparing means. I used R and would have posted in their forum, except this is more theory. When I used the anova function on a data set, I got a low p-value and high F -...
  19. A

    2x2 Anova, im struggling to report the assumptions

    Hello, I've ran a 2x2 anova and am trying to report the assumptions but would like to make sure ive done it correct, statistics is my weak point! I have tested normality and homogeneity and also tested for skew and kurtosis. Then am I supposed to report the means and the significance levels...
  20. C

    2x2 mixed ANOVA interaction - do I analyse simple main effects?

    I've conducted a 2x2 mixed factorial ANOVA: IV1 - repeated measures (control vs. experimental) IV2 - between groups (I counter-balanced the order so the groups are Order 1 and Order 2) There is a significant interaction between the two IVs. I can see from a graph where the interaction is...