chi-sqaured

  1. L

    Reduced chi-squared test fit goodness

    In Origin Pro 9, I made 2 linear fits (y = kx + b). For example, I chose equation y = x + 10. In one case, I set experimental following points: x =1, y= 11 x = 2, y = 12 x = 3, y = 12.8 x = 4, y = 14.1 x = 5, y = 15 x = 6, y = 16 x = 7, y = 17.3. In another case, I set: x = 1, y = 10 x = 2, y =...
  2. M

    Positive chi-square test: what to do next?

    Hi!! I'm analysing two categorical variables, Landslides (YES/NO) and Vegetation (grouped into 18 classes), and I'd like to explore and model the relationship between them. Firstly, I've carried out a chi-square test for independence that has returned a positive result, i.e. the two...
  3. U

    1 predictor, 2 different values for baseline statistic & change statistic?

    Hi, I am conducting a Cox Regression for my first time. I created a simple model with only 1 predictor (categorical), one dependent variable (continuous survival time), and 1 event that defines whether the hazard criterion was met (dichotomous). Since there is only one step in this model, I...
  4. J

    Chi square help

    The student population of local college is approximately one-third blond and two-thirds other hair color. Over a 2-day period, the hair color of each student entering the student union building is tallied,with the following results: blonds, 452; others 1,548. Determine whether blonds and others...