Mathematics > EXAM > MATH 221 QUIZ1(over 40 questions with correct answers )graded A (All)

MATH 221 QUIZ1(over 40 questions with correct answers )graded A

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• • Score for this attempt: 28 out of 40 • Submitted Mar 11 at 10:59pm • This attempt took 9 minutes. • • In a survey of 1000 adults, 34% found they prefer charcoal to gas grills. The 34% would be considered a: • • Sample • • Statistic • • • • Population • • • Parameter • • • Of all DeVry students, a study found that 43% of them are business majors. The 43% would be considered a: • • • Parameter • • • Sample • • • Statistic • • • Population • • • Based on past experience, it is predicted that 31% of registered voters in Oklahoma will vote in the next primary. The 31% would be considered an example of: • • Descriptive statistics • • • A sample • • • Qualitative data • • • • Inferential statistics • • • The ages of 20 first graders would be considered: • • Interval data • • • Qualitative data • • • • Quantitative data • • • Nominal data • • • The annual salaries for all teaching in Ohio would be considered: • • Interval data • • • • Ratio data • • • Qualitative data • • • Sample data • • • The nationalities (for example, Asian, European, etc.) listed in a recent survey would be considered: • • Ordinal data • • • Interval data • • • Ratio data • • • • Nominal data • • • Sixteen students are randomly selected from each grade level at a high school and asked about their eating habits. This sampling technique is called: • • • Cluster • • • Random • • • Convenience • • Correct Answer • • Stratified • • • Cameras are set up to watch an intersection and determine how many cars are let through with each green light interval. This study design would be considered: • • Simulation • • • Survey • • • • Observational • • • Experimental • • • Which of the following would be the mean of this data set: 5, 17, 22, 56, 4, 2, 33, 21 • • 16.90 • • • 19.00 • • • 18.06 • • • • 20.00 • • • Which of the following would be the standard deviation of this population data set: 67, 54, 30, 77, 92, 41, 75, 81 • • 64.625 • • • 517.000 • • • 19.855 • • • • 21.226 • • • Question 11 • 0 / 2 pts • Which of the following would be the variance of this population data set: 3, 9, 8, 9, 4, 5, 7, 11, 9, 7, 5, 4, 3, 1 • • 2.92 • • • • 2.81 • • • 8.53 • • • 7.92 • • • The difference between cluster sampling and stratified sampling would be: .................................................................................continued....................................................................................

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