comparisons

  1. S

    Comparing groups of data sets with the order of data points being taken into account

    Hi everybody, I have a problem related to statistics, and I hope that you can help me out. First, an attempt at a short version of my problem: I have 2 data sets that consist of 3 sub-sets each that I want to compare with a methodology that takes the order of the data points into account. Now...
  2. T

    Comparing two groups and then the sub-groups (of the same)

    Hi I have four groups of variables A, B, C and D. The variables A and B also have (natural) sub-groups (say A1, A2, A3 and B1, B2 and B3). I want to compare them as follows: A - B - C - D (using ANOVA for 4 groups) A1 - B1 (using t test for two samples) A2 - B2 (using t test for two samples)...
  3. P

    Type of analysis to be used - Important because I have a deadline :(

    Hello, I am writing my thesis on innovation management which involves a survey analysis. I am using SPSS statistical tool to perform this analysis but right now I have a blocking point in the type of analysis being used? All the questions were all based on scale between 1-7 (1:completely...
  4. A

    Comparing two samples of volatility data: Some complications

    Hi guys, I'm having some problems establishing the best possible test for a comparison of two samples. Background: I'm investigating the volatility in returns of Exchange Traded Funds which trade non-synchronously with the market of the underlying basket. For example, an ETF for a...
  5. C

    Multidimensional Scaling - Can I split the comparisons between respondents?

    Good evening, For my master thesis I am conducting research in which I want to make decompositional comparisons for Multidimensional Scaling with the following objects: o Rotary o Lions o Unicef o Oxfam o Amnesty International o Salvation Army o Rode Kruis o Food bank o War Child...
  6. I

    Statistics & probability: comparison of two binomial proportions

    Case #1: x1 = 121, n1 = 160, p1 = 121/160 = 0.75625 Case #2: x2 = 52, n2 = 100, p2 = 52/100 = 0.52 [symbols have usual meanings; 90% confidence interval to be used] Qn: Estimate the difference between the two proportions - show steps clearly, give a one sentence interpretation.
  7. M

    Comparing results presented as percents. Best method

    Hi folks, I was wondering if you could help me wrap my head around the best way to present some data and the best statistical test to use to illustrate a comparison. Here is the breakdown: Group A (N=41) was asked to complete a questionnaire that asked them specific questions on a topic...