Unit 1 Quiz: Review questions

Can you explain your answer? Use your fingers to indicate your answer: 1=A, 2=B, 3=C, 4=D. After viewing the question, show me your answer in 15 seconds. Next, turn to your neighbor and you have one minute to convince him/her that you are right.

Professor Sue Yu developed the research question and hypothesis, and decided that the proper way to answer the research question is an experiment. This activity is an example of Research design Measurement Data analysis All of these

Professor Sue Mei had developed the research question and hypothesis Professor Sue Mei had developed the research question and hypothesis. She wanted to know whether physical exercise is related to academic performance. She uses a survey to collect data about students’ GPA and physical activities. This activity is an example of Research design Measurement Data analysis All of these

Professor Lily Li had had collected data about students’ GPA and physical activities. Now she is running a statistical test to examine the relationship of these two variables. This activity is an example of Research design Measurement Data analysis All of these

1. In order to estimate the average (mean) weight of all professional football players, an investigator computes the weight of the “Dallas Cowboy” players. The Dallas Cowboys are a ______. population parameter sample statistic

2. In order to estimate the average (mean) weight of all professional football players, an investigator computes the weight of the “Dallas Cowboy” players. The he made an inference that the average weight of all professional football players should be between 180 pounds and 230 pounds. All professional football players constitute a _______. target population* accessible population sample statistic

Dr. Justin Case would like to investigate the relationship between playing video game and test performance. He cannot afford going around the world to collect data though he intends to generalize the conclusion to all video game players. As a compromise he draws a random sample from Biola University. The Biola students are the _____________. sample statistics population parameter accessible population target population

The UCLA admission officer retrieved all the student records and found that the average GPA of all transferred students is 3.65 whereas that of all non-transferred students is 3.74. He concluded that non-transferred students had better academic performance than transferred students. What he did is: Descriptive statistics Inferential statistics Census All of the above

The counseling office at Citrus College sampled 300 students and found that the frequency of binge drinking is 1.5 times per week. The counselor isn’t sure whether there is a problem or not, and he simply sent the number to the Dean Office. What the counselor did is: Descriptive statistics Inferential statistics Census All of the above