MAT 202 SAMPLING CHECKPOINT QUIZ (Straighterline)

SAMPLING CHECKPOINT Step 1 of 1 Question 1 of 7 When conducting a survey, it is important to use a random sample: to ensure truthful answers to the survey's questions. so that we can make causal conclusions. to avoid bias and to get a representative sample. to get a significant result. none of the above. Good job! Random selection ensures that the sample is unbiased and represents the population, so that the results of the study can be generalized to the population. Question 2 of 7 In order to obtain a sample of undergraduate students in the United States, a simple random sample of 10 states is selected. From each of the selected states, 10 colleges or universities are chosen at random. Finally, from each of these 100 colleges or universities, a simple random sample of 20 undergraduate students is selected. Thus, the final sample consists of 2,000 undergraduates. This is an example of: simple random sampling. stratified sampling. multistage sampling. convenience sampling. none of the above. Good job! This is an example of multistage sampling, because first a random sample of a few states was selected, then in each of those states another random sample of a few universities was selected, and finally in each of those universities a random sample of a few students was selected. The next three questions refer to the information about the faculty senate survey