2 The methods of economics Farid Abolhassani Economic

2 The methods of economics Farid Abolhassani ﺭﻭﺵ ﻫﺎی ﺍﻗﺘﺼﺎﺩی

ﻣﺪﻝ ﻫﺎی ﺍﻗﺘﺼﺎﺩی Economic Models represent the relationships between different variables ﻣﺪﻟﻬﺎ ﺭﻭﺍﺑﻂ ﺑیﻦ ﻣﺘﻐیﺮﻫﺎی ﻣﺨﺘﻠﻒ ﺭﺍ ﻧﻤﺎیﺶ . ﻣی ﺩﻫﻨﺪ B A V F E Models, by definition, are able to make predictions about the effect of a change in one particular variable, while all other variables remain unchanged (Ceteris Paribus) C D ﻃﺒﻖ ﺗﻌﺮیﻒ ﻗﺎﺩﺭ ﺑﻪ پیﺸگﻮیی ، ﻣﺪﻟﻬﺎ ﺩﺭﺑﺎﺭﻩ ی ﺗﺎﺛیﺮﺍﺕ ﺗﻐییﺮ ﺭﻭی یک ﻣﺘﻐیﺮ ﺧﺎﺹ ﻫﺴﺘﻨﺪ ﺩﺭ ﺣﺎﻟی کﻪ ﺳﺎیﺮ ﻣﺘﻐیﺮﻫﺎ

The Scenario ﻓیﻠﻤﻨﺎﻣﻪ Patient Nurse =4 Hospital 2 Hospital 1 The main concern of the nurse manager of Hospital 2: How many new staff members will be required to treat the patients who previously went to the other hospital? چﺎﻟﺶ ﺍﺻﻠی ﻣﺪیﺮ پﺮﺳﺘﺎﺭی : 2 ﺑیﻤﺎﺭﺳﺘﺎﻥ چﻨﺪ ﻧﻔﺮ ﺍﺯ ﺍﻋﻀﺎی کﺎﺭکﻨﺎﻥ ﺑﺮﺍی ﺩﺭﻣﺎﻥ ﺑیﻤﺎﺭﺍﻧی کﻪ ﻗﺒﻼ ﺑﻪ ﺑیﻤﺎﺭﺳﺘﺎﻥ ﻣﺮﺍﺟﻌﻪ کﺮﺩﻩ ﺍﻧﺪ ﻻﺯﻡ ﺍﺳﺖ؟

Coefficients Determine the Slope ﺿﺮﺍیﺐ ﺗﻌییﻦ ﺷیﺐ

Parallel line shift ﺍﺧﺘﻼﻑ ﺧﻄﻮﻁ ﻣﻮﺍﺯی 16 14 12 10 y=2 x 8 y=3+2 x 6 y=5+2 x y=7+2 x 4 2 0 0 1 2 3 4

A curved-line relationship ﺭﺍﺑﻄﻪ ﺧﻂ - ﻣﻨﺤﻨی

The slope of a curve at a particular point ﺷیﺐ یک ﻣﻨﺤﻨی ﺩﺭ یک ﻧﻘﻄﻪ ﺧﺎﺹ

ﺗﺠﺰیﻪ ﻭ ﺗﺤﻠیﻞ ﺣﺎﺷیﻪ Marginal Analysis Tomans / Number Marginal benefit of pizza ﺣﺎﺷیﻪ ﺳﻮﺩ پیﺘﺰﺍ 2000 1000 ﺣﺎﺷیﻪ ﻫﺰیﻨﻪ پیﺘﺰﺍ 0 - 500 Marginal cost of pizza 1 2 3 4 Number

Incremental Product ﺗﻮﻟیﺪ ﺗﺪﺭیﺠی ﺗﻮﻟیﺪ ﺗﺼﺎﻋﺪی Incremental product is, in essence, an ﺩﺭﻭﺍﻗﻊ ﺗﻮﻟیﺪ ﻧﻬﺎیی ﺍﺳﺖ estimate ﺑﺮآﻮﺭﺩ ﺗﻘﺮیﺒی approximate of marginal product`