Lab Number 7 Key

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Coastal Carolina Community College *

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043

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Mathematics

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Apr 3, 2024

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docx

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3

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MAT 043 Lab #7 Key 1. The data below represents the 2019 market value of some of the world’s largest companies according to Forbes Magazine. Company Market Value (billions of dollars) Bank of America 287 Wells Fargo 215 BP 150 Apple 961 AT&T 233 Verizon 240 Amazon 916 BMW 58 Pepsi 178 Sony 60 Ford 38 American Express 95 Microsoft 947 Nestle 281 Samsung 272 Exxon Mobile 343 IBM 125 General Motors 57 Walmart 296 Data in order: 38, 57, 58, 60, 95, 125, 150, 178, 215, 233, 240, 272, 281, 287, 296, 343, 916, 947, 961 n = 19 Use the company market value data set to find the following: a. Find the mean (round to the nearest whole number) x = 5752 19 = 302.74 ≈$ 303 billion b. Find the mode No mode c. Find the median M = n + 1 2 = 19 + 1 2 = 20 2 = 10 th position, so M = $ 233 billion d. Find the range range = 961 − 38 = $ 923billion
e. Are there any distinct outliers present in this data set? If so, list them. Yes, $916 billion, $947 billion, and $961 billion 2. Let’s calculate the five-number summary for the company data and then create a box and whisker plot to model the data. 38, 57, 58, 60, 95 Q 1 , 125, 150, 178, 215, 233 median , 240, 272, 281, 287, 296 Q 3 , 343, 916, 947, 961 Company Market Value (Billions of Dollars) Bank of America 287 Wells Fargo 215 BP 150 Apple 961 AT&T 233 Verizon 240 Amazon 916 BMW 58 Pepsi 178 Sony 60 Ford 38 American Express 95 Microsoft 947 Nestle 281 Samsung 272 Exxon Mobile 343 IBM 125 General Motors 57 Walmart 296 Indicate the five-number summary: Low: 38, Q 1 : 95, M: 233, Q 3 : 296, High: 961 Construct a box and whisker plot to model the data above: Characterize the data above as: Right Skewed 3. Using the data calculated from #2, find the following: a) What percent of the companies made more than $296 billion? 25%
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