MATH 1131 Chapter 1: MATH 1131 – Introduction to Statistics I - T1
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10 Mar 2017
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Textbook/lecture 1 practice problems: in a sample of 1,000 students in a university, 125 of them or 12. 5% are biology majors. This is an example of descriptive statistics, rather than inferential statistics: answer: f, suppose you are given a graphical portrayal of a relative frequency distribution of continuous quantitative data with the following characteristics. The lower and upper limits of the data classes are identified by tick marks on a horizontal axis. The corresponding relative class frequencies are represented by the areas of vertical rectangles connected to each other and positioned on top of each of these class intervals. What is such a graphical presentation called: a stacked bar chart, a pareto chart, a pictogram, a relative frequency histogram, answer: f, a histogram is often used to portray various characteristics of a quantitative variable. Consider all the cheeses produced in the world. Suppose 75% of them are aged less than 2 years.