how many observations do we need in a random factor random factors how many observations to fit how many observations does a random effect need how many observations are required for random effects to be accurate how many observations are needed in a random factor? how many observations are required per random factor how many random variables should be included in a random variable how many random variables in a random factor how many observations do you need to fit a random variable how many observations are needed per random factor how many observations are needed for random effects how many random factors in a random factor how many data points should we consider in random effect? how many random effects does each type of random effect have? how many observations do you need in a random factor how many observation levels is the random effect how many random factors do we need in an experiment how many observations per random factor how many observations in a random effect how many random effects are there in a model