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% of global population by income Poor Low Middle Upper High Income Income Middle Income 56 Income 205 15 13 2001 2041 2001 2011 2001

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% of global population by income Poor Low Middle Upper High Income Income Middle Income 56 Income 205 15 13 2001 2041 2001 2011 2001 2011 2001 2011 2001 2011 Now: The Broer live on $ 2 of less daily, kin income on $2 01-10. middle income $10.01-20, apparunidole income on $ 20:01:50, and high incane on more than $50 gurus merged in 101 4 purchasing power parities in 2011 prices. People are pipiped by the daily pat capita income on of their toonly.two choice of metre depending on how the source dina lorac arch coraur can the World Bank Pow PEW RESEARCH CENTER NOTE: Even thought the data is grouped, the random variable is still discrete because the sample space only includes values to the hundredths place. Sample space: {$0.00, $0.01, $0.02, $0.03, ...} We know this is a probability distribution because it states that it is the "% of global population by income." Let's create a probability distribution table to organize the data to use to find the means and standard deviations for the years 2001 and 2011. You will find the quantitative values for the classes in the small print under the graph. The high income category includes $50.01 and up. For our purposes, we will end that category at $100. Please complete the table. Round the midpoints to the nearest dollar. Do not use spaces in your answers. P(2001) P(2011) Classification r # Income in $/Day Midpoint (use decimals) (use decimals) Poor 0-2 1 0.29 0.15 Low Income 0.50 Middle Income 10.01-20 0.07 0.13 Upper-Middle Income 35 0.09 High Income 50.01-100 0.06 0.07

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