g*power

  1. B

    Help on Chi-Square tests and G*power sample size estimation!

    Hi, I'm having trouble figuring out which statistical test I need to use for my experiment. I want to see if certain types of food items are represented in certain locations. To test this I have an experiment where participants place items into locations as they desire. After that, they learn...
  2. J

    How to calculate sample size by G*Power?

    I want to use the application P*Power 3.1.9.3 to determine the sample size. Is there someone who can help me with the right settings? See attached: - Test family - Statistical test - Type of power analyses - Input Parameters (tails / effect size / err prob / Power) My statistical test will...
  3. N

    Post-Hoc Power Analysis (G*Power) for simple linear regression

    Hey everyone! I conducted a simple linear regression with non-significant results. Now I would like to analyze the power of this calculation using G*Power. I chose the option "F-tests - Linear multiple regression, fixedmodel, R(2) deviation from zero and entered 1 as my numer of predictors...
  4. K

    Calculating Variance Explained by Effect: High Intercept Sum of Squares Problem

    Hi :) Context: I'm using G*Power to conduct a post hoc power analysis. The study design is a 2x2 Two-Way ANOVA. ANOVA was done in SPSS. Within G*Power, I'm using Protocol of power analyses -> F tests -> ANOVA: Fixed effects, special, main effects and interactions. Then to get the effect...
  5. M

    Advice on an assignment using G*Power

    Advice on an assignment using G*Power A student I am tutoring in precalc asked me to help him on the following assignment from his Intro to Prob & Stat class. I am suppose to "explain" the assignment to him tomorrow, but I do not understand it myself. Here's the kicker... I read the email...