1 Cut zucchini in half lengthwise (if needed, trim bottom so it sits still in baking dish) 2  Scoop out the center where the seeds are with a spoon.  Mix the crushed garlic, olive oil, salt and pepper in a small bowl. Brush surface of zucchini with the mixture.
In econometrics, random effects models are used in the analysis of hierarchical or panel data when one assumes no fixed effects (it allows for individual effects). The random effects model is a special case of the fixed effects model.here are two common assumptions made about the individual specific effect, the random effects assumption and the fixed effects assumption. The random effects assumption (made in a random effects model) is that the individual specific effects are uncorrelated with the independent variables.
Sometimes when a business is struggling and there is no way to know why you can use a manipulated variable to see if that is the problem. 48 people found this helpful. Sometimes thing are not perfect, not everything is ideal, occasionally there exists a manipulated variable that affects the outcome of experiments. 39 people found this helpful. If you wanted to find out if an action is the cause of an event you could try using a manipulated variable to see if that is what causes it.