Question 1 of 5 Share Facebook Twitter LinkedIn WhatsApp Email Copy Link A professor designed a study to determine whether noise level outside the classroom affects exam scores. Three 80-question exams were administered at various points in the course, in the room in which the course was taught, during regular class time. The professor arranged for absolute silence outside the classroom during the first exam, low-level noise during the second, and moderate noise during the third. The professor then compared exam scores across the three exams. Which of the following is the independent variable in the study? A. Time of exam administration B. Noise level C. Exam score D. Exam difficulty Submit Answer
Question 2 of 5 Share Facebook Twitter LinkedIn WhatsApp Email Copy Link A professor designed a study to determine whether noise level outside the classroom affects exam scores. Three 80-question exams were administered at various points in the course, in the room in which the course was taught, during regular class time. The professor arranged for absolute silence outside the classroom during the first exam, low-level noise during the second, and moderate noise during the third. The professor then compared exam scores across the three exams. A professor designed a study to determine whether noise level outside the classroom affects exam scores. Three 80-question exams were administered at various points in the course, in the room in which the course was taught, during regular class time. The professor arranged for absolute silence outside the classroom during the first exam, low-level noise during the second, and moderate noise during the third. The professor then compared exam scores across the three exams. Which of the following is a potential confound in the study? A. Absolute silence outside the classroom B. Course difficulty C. Room in which the exam was given D. Time in the semester that the exam was given Submit Answer
Question 3 of 5 Share Facebook Twitter LinkedIn WhatsApp Email Copy Link If the results of a study are statistically significant, they A. most likely cannot be replicated B. have practical significance C. are the opposite of what was predicted D. are most likely not due to chance Submit Answer
Question 4 of 5 Share Facebook Twitter LinkedIn WhatsApp Email Copy Link Dr. Gregory is utilizing a procedure that identifies groups or clusters of abilities in her intelligence research. Which of the following techniques is Dr. Gregory most likely using? A. Factor analysis B. Standardization C. Chi-squared test of independence D. Criterion testing Submit Answer
Question 5 of 5 Share Facebook Twitter LinkedIn WhatsApp Email Copy Link A class of ten students takes an exam on which nine of the students earn scores in the range of 70-80. One student earns a perfect score of 100. In examining the test scores, the professor notices that the perfect score has the largest effect on which of the following measures? A. Mean B. Median C. Mode D. Percentile rank Submit Answer