1 Which of the following is a continuous variable? A)Daily high temperature in Richmond Kentucky B)Type of fish caught on a fishing trip B)Number of whole leaves on a tree D Zip Code QUESTION 2 Parking at a large university has become a major issue. University administrators would like to determine the average time it takes a student to find a parking spot in a university lot. Students who are willing to participate in the study were asked to record the time between entering campus and pulling into a parking spot. Which of the following pairs would be appropriate for displaying the parking time data? A. Bar graph or histogram B. Bar graph or pie graph C. Box plot or pie graph D. Box plot or histogram QUESTION 3 Test scores for a history class had a mean of 79 with a standard deviation of 4.5. Test scores for a physics class had a mean of 69 with a standard deviation of 3.7. Suppose a student gets a 68 on the history test and a 87 on the physics test. Calculate the z-score for each test. On which test did the student perform better and why? Round your answers to 2 decimal places. Clearly label each response and type out your work. QUESTION 4 Suppose you were to collect data for the pair of given variables in order to make a scatterplot. For the variables time spent on homework and exam grade, which is more naturally the response variable and which is the explanatory variable? A. Time spent on homework: explanatory variable Exam grade: response variable B. Time spent on homework: response variable Exam grade: explanatory variable QUESTION 5 The relationship between the number of games won by a minor league baseball team and the average attendance at their home games is analyzed. A regression to predict the average attendance from the number of games won has an r = 0.73. Interpret this statistic. A. Positive, weak linear relationship. 7.29% of the variation in average attendance is explained by the number of games won. B. Positive, fairly strong linear relationship. 73% of the variation in average attendance is explained by the number of games won. C. Positive, fairly strong linear relationship. 53.29% of the variation in average attendance is explained by the number of games won. D. Negative, fairly strong linear relationship. 53.29% of the variation in average attendance is explained by the number of games won. E. No association QUESTION 6 A guidance counselor is interested in what 1st graders in her school perceive as their biggest challenge. She plans on interviewing 26 students. Which of the following describes a convenience sample? A. She obtains the records for each first grader that attends the schools and randomly selects 26 students to interview. B. She knows that Mrs. Jones class has exactly 26 students so she visits Mrs. Jones class and surveys the students. C. She sends a survey home with every 1st grader. She then selects 26 of the returned surveys randomly. D. She sorts all of the students by last name and for each letter in the alphabet selects a students who last name starts with that letter randomly. QUESTION 7 An education researcher is interested in determining whether a particular teacher and/or teaching method has an effect on students' reading comprehension scores. There are four different teachers of interest to the researcher (Juliana, Felix, Sonia, and Helen) and three different teaching methods (method A, method B, and method C). The 240 students participating in the study are randomly assigned to a teaching method and teacher so that each teacher/method combination has 20 students assigned to it. After the teaching method is completed, the student's scores on a reading comprehension test are recorded. Identify the response variable. A. Teaching Methok B. Teacher C. Student D. Score on reading comprehension test E. Method A, method B, method C QUESTION 8 An education researcher is interested in determining whether a particular teacher and/or teaching method has an effect on students' reading comprehension scores. There are four different teachers of interest to the researcher (Juliana, Felix, Sonia, and Helen) and three different teaching methods (method A, method B, and method C). The 240 students participating in the study are randomly assigned to a teaching method and teacher so that each teacher/method combination has 20 students assigned to it. After the teaching method is completed, the student's scores on a reading comprehension test are recorded. Identify the explanatory varaible(s). A. Teaching Method B.Teacher C.Student D. Teacher and student E. Teacher and teaching method QUESTION 9 Identify which type of sampling is used. A market researcher selects 500 drivers under 30 years of age and 500 drivers who are 30 years of age and older. A. Convenience Sample B. Simple Random Sample C. Stratified Random Sample D. Cluster Random Sample QUESTION 10 Identify which type of sampling is used. A market researcher interviews all people from each of 10 randomly selected small cities. A. Convenience Sample B. Simple Random Sample C. Stratified Random Sample D. Cluster Random Sample