chance level

  1. E

    Statistical significance of results

    Hi, I made an experiment and I want to know if the results are significant or not. But I know nothing about statistics. In that experiment, I show a serie of 70 videos to 12 participants. Each participant should select from a list of seven choices (the same for all the videos) the emotion...
  2. G

    What is chance performance cut-off for a 2-part dichotomous response?

    If subjects had to give 2-alternative forced choice responses for a task (Y/N) and then rate the certainty of their response (also 2-alternative forced choice: High/Low), and we analyzed their responses in the 4 resulting bins (Y-Hi, Y-Lo, N-Hi, N-Lo), what would be considered "chance...
  3. I

    How to test Accuracy significantly different from chance?

    Hi All, So I have more than 60 subjects who participated in an experiment. I would like to exclude those who performed at chance level. The problem is where should I set my cut off? Is 55% not chance? And 57? So my prof said I should test if the suspect cases significantly differ...
  4. K

    How to calculate if a mean is above chance level

    Dear all, I have a problem to compare means from two groups with chance level. The Variable I want to compare against chance level is calculated like: X=(Var1-Var2)/(Var1+Var2). How do I calculate chance level and how can I say if the mean I measured is significant above chance level or...