Data on the amount of time spent studying for a particular exam at a high school were collected for 150 students. You want to know if half of the students spent at least how much time studying for that exam. Which of the following would you compute?
A) Median B) Arithmetic mean
C) Coefficient of variation D) Coefficient of correlation
Q. 2Data on the amount of time spent studying and the exam score of 150 students at a high school were collected. You want to know if a student's exam score is linearly related to the amount of time spent on studying. Which of the following would you compute?
A) Median B) Coefficient of correlation
C) Coefficient of variation D) Arithmetic mean
Q. 3True or False: Data were collected on the amount of detergent used in gallons in a month by 25 drive-through car wash operations in Phoenix. You can use a time-series plot to present this information.
Indicate whether the statement is true or false
Q. 4True or False: The opinions (classified as for, neutral, or against) of a sample of 200 people were broken down by gender about the latest congressional plan to eliminate anti-trust exemptions for professional baseball. You can present this information using a scatter plot.
Indicate whether the statement is true or false
Q. 5True or False: A sample of 200 students at a Big-Ten university was taken after the midterm to ask whether they went bar hopping the weekend before the midterm or spent the weekend studying, and whether they did well or poorly on the midterm. You can use a contingency table to present this information.
Indicate whether the statement is true or false
Q. 6True or False: A survey was conducted to determine how people rated the quality of programming available on television. Respondents were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality). A cumulative percentage polygon (ogive) can be used to present this information.
Indicate whether the statement is true or false
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