statistical difference

  1. J

    What is n in bonferoni test

    I want to compare and calculate the prediction accuracy of 4 algorithms, linear regression, support vector regression, bagging and multilayer perception. So each algorithm will be compared with other three. I have to evaluate their performance with 4 different datasets, so in total 3 algorithms...
  2. T

    Which statistical test to use for multi-modal and mixed type data?

    I researched for hours but cannot find the direction for the right statistical test to use. Here is the situation for Population A and B: When plotting this frequency distribution, it looks like this: My observations to this point: - Shape: Multi-modal - Data type: Discrete Additional...
  3. M

    How can I determine if two graphs are statistically significantly different

    Hi, I'm working on a medical research project and need some stats help. I have limited statistical knowledge but I understand that basics. I need help with the following... I have two graphs: A: y = -0.000003x^3 + 0.000664x^2 - 0.028609x + 0.333098 B: y = -0.000003x^3 + 0.000781x^2 -...
  4. T

    significant change in binomial data?

    I want to determine how much of a change in pass rates do I need to observe for it to be statistically significant. For example: pretend there are 2,000 people who took English101 in the last 4 years, and 1500 of them passed the class. 1500/2000 = 0.75 pass rate. I want to set a goal of...
  5. W

    Statistical Difference vs. Norm

    Hello, I would appreciate your help with something. I have a study to test an advertisement of n=150. The results are given as percentages for each answer. I also have a norm composed of the average of 18 previous studies, all n=150, with identical questions giving me a sample size of...