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Descriptive statistics powerpoint

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Descriptive Statistics Chapter 2 © 2019 Cengage. All Rights Reserved. Overview of Using Data: Definitions and Goals © 2019 Cengage. All Rights Reserved. Overview of Using Data: Definitions and Goals (Slide 1 of 5) • Data: The facts and figures collected, analyzed, and summarized for presentation and interpretation. • Variable: A characteristic or a quantity of interest that can take on different values. • Observation: A set of values corresponding to a set of variables. • Variation: The difference in a variable measured over observations. • Random variable/uncertain variable: A quantity whose values are not known with certainty. © 2019 Cengage. All Rights Reserved. Overview of Using Data: Definitions and Goals (Slide 2 of 5) Table 2.1: Data for Dow Jones Industrial Index Companies Company Symbol Industry Share Price ($) Volume Apple AAPL Technology 160.47 18,997,275 American Express AXP Financial 91.69 2,939,556 Boeing BA Manufacturing 258.62 2,515,865 Caterpillar CAT Manufacturing 130.54 2,380,342 Cisco Systems CSCO Technology 33.60 9,303,117 Chevron Corporation CVX Chemical, Oil, and Gas 120.22 4,844,293 DuPont DD Chemical, Oil, and Gas 83.93 34,861,021 © 2019 Cengage. All Rights Reserved. Overview of Using Data: Definitions and Goals (Slide 3 of 5) Table 2.1: Data for Dow Jones Industrial Index Companies (cont.) Company Symbol Industry Share Price ($) Volume Disney DIS Entertainment 98.36 5,942,50 ...
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