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This study guide covers key concepts from ban 280 chapter 2, focusing on descriptive statistics. It includes questions and answers related to absolute frequency, relative frequency, cumulative relative frequency, standard class width, cumulative absolute frequency, and quartiles (q1, q2, q3). The guide also addresses histogram interpretation and data representation. It is designed to help students understand and apply these statistical measures effectively, providing a solid foundation for further statistical analysis and interpretation. Useful for university students.
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The absolute frequency for the class 25 but < 35 is - correct answer ✔✔the number of observations in the data set >= 25 but < 35 The relative frequency for the class 25 but < 35 is - correct answer ✔✔the number of observations in the data set >= 25 but < 35 divided by the sample size The cumulative relative frequency for the class 25 but < 35 is - correct answer ✔✔the number of observations in the data set < 35 divided by the sample size What is the standard class width for the following table? Class (items/day) 20 But < 40 40 but < 50 50 but < 60 60 but < 70 70 but < 80 80 but < 90 but < Total - correct answer ✔✔ 10 The first class in the following table: 24 But < 40 But < 44 44 but < 48 48 but < 52 52 but < 56 56 but < 60 60 but < 64 64 but < 68
68 but < 72 - correct answer ✔✔is four standard widths wide What is the cumulative absolute frequency for the class 80 but < 100 in the following table? - correct answer ✔✔ 145 Consider for the following table and histogram: - correct answer ✔✔the histogram does NOT correctly represent the absolute frequency distribution in the table What is Q1 given the following data: 7 3 9 5 5 5 6 6 6 2 9 4 - correct answer ✔✔4. What is Q2 given the following data: 7 3 9 5 5 5 6 6 6 2 9 4 - correct answer ✔✔None of these What is Q3 given the following data: 7 3 9 5 5 5 6 6 6 2 9 4 - correct answer ✔✔6.