The Main Purpose for Using Randomization in an Experiment

Quiz 3 12pm Class Question: What is the main purpose for using randomization in an experiment? Here are your answers in random order. See my comments. randomization is used in an experiment so that biases are removed. by randomizing an experiment can be fair in using the sample to determine the causes or responses of the experiments. The first sentence is correct, but the second one is not clear. To avoid bias Good. To make sure the results are not biased. Good. The main purpose fro randomization in an experiment is so the data can be more accuarate and so there will be no biases, lurking variables, etc. Good, although the word “accurate” doesn’t really make sense here. it helps allow getting rid of any bias. Good. so you dont have bias in your experiment Good. To see the results of each group. For instance , if you were testing something such as a treatment you will randomized the subjects into two groups one control group and the other treatment to see the results of each group, to see what the effects are. Not really. You can see the results from each group without randomization too. So randomization has a different purpose. Because it helps prevent biases and produces the most accurate representation of a population. Good, but the second part of your sentence is not correct. The main purpose for using randomization in an experiment is to avoid biased responses or subjects. This will make the experiment effective and effecient. Good. (What do you mean by “efficient”?) To possibly avoid bias and lurking variable in the survey. This is not a survey, it’s an experiment, but otherwise you are correct. < No Response Given > < No Response Given > eliminate bias Good. Using randomization in an experiment enables the researcher to use real-life terms in order to get a realistic response to the experiment. If there wasn't randomization, it makes room for many biases to be brought into the experiment. Good. So that the results aren't bias Good. to avoid any bias and lurking variables. Good. The main purpose of using randomization in an experiment is to see how people will act differently. Especially if given something different. Would it have the same affect or not. No. randomization will allow for the least amount of biases. Good. To get more accurate results to your experiment, you must use randomization. This allows you to lessen the chance of any bias in your experiment. Good. Randomization is the best way to ensure a non-biased sample, which can can be safely used to make inference, thus, a non-biased result. Good. In order to eliminate bias. Good. the main purpose is to get an unbias and productive response Good, but what do you mean “productive response”? to avoid bias Good. Randomization in an experiment produces the most unbiased product and probably the most true statements. It also prevents anyone from thinking different results based on biases. Good, but “true statements” doesn’t make sense. Randomization in an experiment prevents Bias, and result are accurate to be applied to the large population of interest. Good, although the second part of your response is not completely correct. To avoid bias Good. Randomization helps to remove bias and ensure that the sample is truly representative of the population. The first part is correct, but not the second. That would be random sampling, but the question is about randomization, that is random assignment of treatments. To avoid biases and minimize lurking variables. Good.