relationships

  1. J

    Relationship between events

    I've come across this exercise. There has been a research on free time activities, which has the following findings: 55% of people that are under 50 years old run regularly (three times per week), whereas only 35% of people who are over 50 run regularly. Assume that 60% of people are under 50...
  2. J

    Find Correlations

    Let's say I have some samples, that I gathered per second, like these Number km Benzine Speed Weight 1 10 100 80 100 2 20 90 100 120 3 30 80 80 110 with thousand of samples and more than twenty features (like speed and...
  3. M

    Multivariate Statistic: Linear or unimodal relationship?

    Hi, if I want to analyze a multivariate dataset, I have to choose between methods assuming a linear relationship between the outcome and underlying gradients (e.g. in PCA or RDA) or an unimodal relationship (e.g. in CA or CCA). Does somebody know if there are appropriate test statistics...
  4. Y

    Help on stats for research model needed

    I am in need of a quick statistical advice for a study I planned, and I hope you can help me a bit with it. I'd really appreciate your expertise. The research is on nudging (subtle psychological manipulations). My model is attached to the post. The model looks kind of funny, so let me...
  5. U

    Verify That I'm conducting the correct tests?

    Both problems relate to this regression model: y = b0 + B1*(x1) + B2*(x2) + e a. Does x2 have influence on y? Test: Ho: B2 = 0 Ha: B2 ≠ 0. Using a T-test between y and B2 Or use F-test and look at B2 Coeff? b. Every 10 increase in x1 corresponds to a y increase of 15? Test: Ho...
  6. T

    clustering similar lines (on chart)

    Firstly sorry if this is the wrong forum for this question. I have a matrix made up of distances in meters and for every distance I have an R2 value, the chart I plot in excel is a simple line chart that shows a bunch of lines that could 'seem' to be clustered and have a relationship as the...