The field of economics is wide, and to study every aspect thoroughly, one must need to break it down into several parts. This whole subject is broadly divided into three main parts, Microeconomics, Macroeconomics, and Econometrics.
Each of these types has its way of observing and handling the stability of human wants and needs. From hereon, we will get deep into these sections of economics separately to understand the essence and importance of economics in an economy.
Microeconomics
This branch of economics deals with the choices an individual, household, or firm makes regarding the allocation of resources. Microeconomics studies the various factors involved in selecting scarce resources and the effect of those decisions on the economy. It scrutinises the factors influencing people while choosing a resource that meets their needs. Subsequently, it also inspects the effect those decisions have caused in the market or economy by deflecting the price, supply, and demand.
In a nutshell, microeconomics deals with the supply and demand of various markets. It analyses and demonstrates the relationship households and businesses share and their interaction's impact. Several economic activities go between a household and business, like purchasing household goods and services, selling own resources by individuals, and many others.
The primary focus of microeconomics is on the variables that affect individual economic decisions, their impact on each decision-maker, and how demand and prices are established in specific markets. It analyses the market process that eventually sets the prices for goods and services in the market for all. In brief, it demonstrates the circumstances under which open markets finally result in favourable distributions. Moreover, it also examines market failure, i.e., when the market is unable to deliver useful outcomes.
The study of microeconomics considers various factors while assessing the behaviour of individuals and firms. Some of the factors are mentioned below;
- Law of Supply and Demand
- Fixed cost and Variable cost
- The Elasticity of Demand
- Utility
- Marginal Cost
- Market Structure
- Opportunity Cost
- Market Failure and Externalities
Macroeconomics
After observing the changes on a micro level, this branch of economics deals with the nation's economy. It focuses on the changes in the economic output, interest on foreign exchange rates, GDP, changes in employment, and inflation, as these essentials determine sound growth of society/economy.
Macroeconomics deals with the entire economy's performance, structure, and behaviour while analysing. As it considers the whole economy, the working areas in macroeconomics are divided into two broad parts: long-term economic growth and the short-term business cycle.
Examining every sector/industry of the economy and its correlation is crucial to understanding the nation’s economy. By making necessary observations, the economists develop models that explain the changes in the economy due to variables like GDP and inflation. These models and forecasts thus, make a path for the government to work on. From hereon, the government entities use these assessments to construct and evaluate new economic, monetary, and fiscal policies that can help develop the economy.
Apart from the government, businesses use these predictions to set strategies in domestic and global markets; the investors also make the most out of it by planning the movements in various asset classes. This gives the investors and businesses a thorough understanding of the effects of new economic trends and policies on their industries.
The entire process must be executed with mindfulness as the study of macroeconomics works on an enormous scale.
Econometrics
This interesting branch of economics uses statistical and mathematical models to develop theories and predict future trends from historical data. In simple terms, it turns theoretical economic models into useful tools for economic policymaking. The methods used in econometrics rely on the statistical conclusion to analyse economic theories with the help of tools like probability, frequency distribution, correlation analysis, and many others.
In basic terms, econometrics makes things more practical and calculative in nature. It transforms qualitative statements into quantitative statements and theoretical models into something that can be calculated or estimated. It is thus a practical approach in the field of economics.
There are several sections of economics where econometric methods are used to gain effective results, such as;
- Macroeconomics
- Microeconomics
- Finance
- Labour Economics
- Economic Policy
One of the basic tools for econometrics is the multiple linear regression model that models a relationship between a scalar response and more than one explanatory variable. The professionals in this field or the econometricians try to find estimators that everyone can rely on, and they should also possess statistical properties like unbiasedness, consistency, and efficiency.
Though it is a science, econometrics can also be considered an art that demands considerable judgment and can eventually obtain useful estimates for policymaking.