# MIMI - ECO 578 Spring 2016 Page 1 NAME ID Online Exam I...

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ECO 578 Spring 2016Page 1NAME:_____________________ID:_____________________Online Exam IPart A: True or False (1-20)Please put T or F in the column T or F boxTFT1For the data, 35, 22, 18, and 25, the value of the median is 20.F2The random sample is the most important, because statistical theory applies to it alone
Sturges’ rule is used to determine whether a frequency distribution can be constructed for a given set of data.
4The sum of the class frequencies is equal to the number of observations madeA relative frequency distribution describes the proportion of data values that fall within each category
There would be no need for statistical theory if census, rather than a sample was always used to obtain information about populations.
7Planning is the most important step in a statistical study
8The following number of student enrolled in 10 elective English classes offered during the year at acommunity college: 11, 24, 15, 14, 15, 13, 26, 15, 10, 14 The modal class size was 14Midterm Exam There are 4 parts: Part A: True/ False (1-20)Part B: Select the correct answer for the following questions (21-28)Part C: Answer the following questions (29-38)Part D: Work Problem (39-50) **All work must be shown step by step**Two different ways to submit your answer sheet1.Scan your answer sheet and place it in ONE FILEat drop-box.(Make sure it is not zipped into one file.)2.Use MS-Word and place it in a drop-box.**Excel is not acceptable for this test**Deadline: Monday, 22ndof February 2016 by noon
ECO 578 Spring 2016Page 2T9Original class interval frequencies can be obtained by multiplying the respective relative frequencies by the total number of observationsF10The following data, reported by a sample of students, are the number of movies seen in a movie theatre during past six months.6 6 9 12 6 4 8 15 6 The frequency of students who saw 6 movies is 6.T11The arithmetic mean is the sum of the data values divided by the number of observations.T12P(A∩ B)is P(B|A)P(A)T13P(A∩ B)=0means that A and B are mutually exclusive events.T14