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Krugman AP Macroeconomics Chapter 12

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Chapter 12: The Meaning and Calculation of Unemployment ? -How unemployment is measured -How the unemployment rate is calculated -The significance of the unemployment rate for the economy -The relationship between the unemployment rate and economic growth ? Employed: people who currently hold a job in the economy, either full time or part time/ only if you have a job Unemployed: people who are actively looking for work but aren?t currently employed Limitations: Retired people Disabled Hasn?t actively searched for a Job in the last 4 weeks Discouraged workers Marginally attached workers Underemployed U.S. Census Bureau monthly survey called the Current Population Survey: interviewing a random sample of 60,000 American families

Krugman AP Macroeconomics Chapter 11

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Chapter 11: Interpreting Real Gross Domestic Product ? -The difference between real GDP and nominal GDP -Why real GDP is the appropriate measure of real economic activity ? GDP: a measure of the size of the economy represents increase in prizes of goods and services rather than an increase in output provides a good way to compare the size of different economies but not a good measure of the economy?s growth over time can grow to economic expansion or just inflation Real GDP: measures actual changes in aggregate output/ adjusted for price changes total value of all final goods and services produced during a given year calculated using the prices of a selected base year (assumed prices stay constant)

Krugman AP Macroeconomics Chapter 15

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Chapter 15: The Measurement and Calculation of Inflation ? -How the inflation rate is measured -What a price index is and how it is calculated -The importance of the consumer price index and other price indexes ? Aggregate Price Level: a measure of the overall level of prices in the economy/single number to represent the overall level of prices Market Basket: a hypothetical set of consumer purchases of goods and services/Hypothetical Consumption bundle Consumption bundle: the typical basket of goods and services purchased before the price changes Price index: measure of the cost of purchasing a given market basket in a given year Base year: always results in a price index of 100 Price indexes are also the basis for measuring inflation

Krugman AP Macroeconomics Chapter 14

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Chapter 14: Inflation: An Overview ? -The economic costs of inflation -How inflation creates winners and losers -Why policy makers try to maintain a stable rate of inflation -The difference between real and nominal values of income, wages, and interest rates -The problems of deflation and disinflation ? Inflation: Most common complaint: an increase in the price level makes everyone poorer- does not make everyone poorer Real Wage: the wage rate divided by the price level Real income: income divided by the price level Inflation Rate: the percent change per year in a price index?typically the consumer price index the percent increase in the overall level of prices per year ? ? The level of prices doesn?t matter Reducing prices = Reducing income

Krugman AP Macroeconomics Chapter 13

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Chapter 13: The Causes and Categories of Unemployment ? -The three different types of unemployment and their causes -The factors that determine the natural rate of unemployment ? 1. Frictional Unemployment: unemployment due to the time workers spend in job search Somewhat inevitable- frictional unemployment doesn?t mean that there is a surplus of labor Constant process of job creation and job destruction New workers are always entering the labor market Limited amount is relatively harmless and may be a good thing Short duration of unemployment Job search: Workers who spend time looking for employment/ if all workers and all jobs were alike job search wouldn?t be necessary 2. Structural Unemployment:

Krugman AP Macroeconomics Chapter 12

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Chapter 12: The Meaning and Calculation of Unemployment ? -How unemployment is measured -How the unemployment rate is calculated -The significance of the unemployment rate for the economy -The relationship between the unemployment rate and economic growth ? Employed: people who currently hold a job in the economy, either full time or part time/ only if you have a job Unemployed: people who are actively looking for work but aren?t currently employed Limitations: Retired people Disabled Hasn?t actively searched for a Job in the last 4 weeks Discouraged workers Marginally attached workers Underemployed U.S. Census Bureau monthly survey called the Current Population Survey: interviewing a random sample of 60,000 American families

Krugman AP Macroeconomics Chapter 11

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Chapter 11: Interpreting Real Gross Domestic Product ? -The difference between real GDP and nominal GDP -Why real GDP is the appropriate measure of real economic activity ? GDP: a measure of the size of the economy represents increase in prizes of goods and services rather than an increase in output provides a good way to compare the size of different economies but not a good measure of the economy?s growth over time can grow to economic expansion or just inflation Real GDP: measures actual changes in aggregate output/ adjusted for price changes total value of all final goods and services produced during a given year calculated using the prices of a selected base year (assumed prices stay constant)

A Tour of the Cell

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Ch. 7 Tour of the Cell 2007-2008 Light Microscope - LM ? Uses visible light ? inexpensive ? live or dead objects ? Resolution: ? As magnification ?, resolution ?. ? ~1000X. ? Limitations: ? many cell structures too small Just magnified 64X Magnification & Resolution Light Microscope Variations ? Unstained ? Stained: ?Methylene blue ? iodine Light Microscope Variations ? Fluorescence: uses dyes to make parts of cells ?glow?. ? Phase-contrast: enhances contrasts in density. ? Confocal: uses lasers and special optics to focus only narrow slides of cells. Electron Microscopes ? Use beams of e- ? Invented in 1939 ? Advantages: ?Much higher mag. ? 50,000X ? Disadvantages: ? Vacuum.

Krugman AP Macro Economics Chapter 10

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?? Chapter 10: The Circular Flow and Gross Domestic Product ? National income and product accounts/National accounts: keep track of the flows of money between different sectors of the economy/ keep track of the spending of consumers, sales of producers, business investment spending, government purchases, and a variety of other flows of money among different sectors of the economy The Simple Circular Flow Diagram: Simple economic diagram with households and firms, omits a number of real-world complications in the interest of simplicity Household: consists of either an individual or a group of people who share their income Firm: is an organization that produces goods and services for sale and employs members of households

Krugman AP Macro Economics Chapter 8

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?? Chapter 8: Supply and Demand: Price Controls (Ceilings and Floors) Price controls: legal restrictions on how high or low a market price may go, government action in economy price ceiling: a maximum price sellers are allowed to charge for a good or service price floor: a minimum price buyers are required to pay for a good or service. Assumption: the markets in question are efficient before price controls are imposed price controls in inefficient markets don?t necessarily cause problems and can potentially move the market closer to efficiency Price Ceilings ? Push Prices down Price Ceiling: suppliers have less incentive to offer apartments less of a good are produced Consumer have higher demand shortage of good

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