when possible, avoid the use of human interviewers, relying on computerized dialing insteadĭ. randomization ensures that the study is double-blinded randomization is a good way to create two groups of 20 families that are as similar as possible except for the treatments they receive Which of the following is a method for improving the accuracy of a sample?ī. randomization reduces the impact of outliersĮ. randomization eliminates the impact of any confounding variablesĭ. ![]() randomization makes the analysis easier since the data can be collected and entered into the computer in any orderĬ. randomization is a good way to create two groups of 20 families that are as similar as possible except for the treatments they receiveī. The most important reason for this random assignment isĪ. He randomly assigns 20 families to the group that will use the new stain remover and 20 to the group that will use the company's current product. He has contracted with 40 families who have agreed to test the product. ![]() TERMS IN THIS SET (47) A researcher is testing a company's new stain remover.
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