01GottIntro_appenShow

01GottIntro_appenShow - If X = 30 Y = If X = 100 Y = 8...

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Appendix 1 Math and Graph Skills

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2 Two variables Personal Expenditure Annual Income \$1,000 \$2,000 \$3,000 \$4,000 \$10,000 \$20,000 \$30,000 \$40,000 Direct relationship Independent variable? Dependent variable?
3 4 3 2 1 10 20 30 40 A B C D Y=1 X=10 Pers. Exp. X Direct relationship Annual Income Slope?

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4 Price per DVD Quantity of DVD \$20 \$15 \$10 25,000,000 50,000,000 75,000,000 \$5 100,000,000 Inverse relationship ( Ceteris paribus ) Independent variable? Dependent variable?
5 20 15 10 5 25 50 75 100 A B C D Y= - 5 X=25 INVERSE Relationship Q P

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6 4 3 2 1 10 20 30 40 B C Y=1 X=10 X Slope? Y intercept (or vertical intercept) Y
7 Equation of linear equation Y = a + b (X) Y intercept slope Equation for previous graph? Y = 1 + 0.1 X

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Unformatted text preview: If X = 30, Y = ? If X = 100, Y = ? 8 Expenditure for Toothpaste at Different Annual Incomes Expenditure Toothpaste Annual Income \$ 20 \$ 20 \$ 20 \$ 20 \$10,000 \$20,000 \$30,000 \$40,000 Inverse or direct? 9 40 30 20 10 10 20 30 40 A B C D Y=0 X=10 Expend. Toothpaste Independent relationship Annual Income 10 4 3 2 1 10 20 30 40 A B C D Y X Movement ALONG a curve 11 20 15 10 5 25 50 75 100 Annual Income \$60,000 Annual Income \$30,000 Quantity demanded Price SHIFT of curve: caused by in 3 rd variable. Relax ceteris paribus...
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• Fall '07
• Bergstrom
• Harshad number, Household income in the United States, Elementary mathematics, annual income, Relax ceteris paribus

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01GottIntro_appenShow - If X = 30 Y = If X = 100 Y = 8...

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