Managerial Economics can be defined as amalgamation of economic theory with business practices so as to ease decision-making and future planning by management. Managerial Economics assists the managers of a firm in a rational solution of obstacles faced in the firm’s activities. It makes use of economic theory and concepts. It helps in formulating logical managerial decisions. The key of Managerial Economics is the micro-economic theory of the firm. It lessens the gap between economics in theory and economics in practice. Managerial Economics is a science dealing with effective use of scarce resources. It guides the managers in taking decisions relating to the firm’s customers, competitors, suppliers as well as relating to the internal functioning of a firm. It makes use of statistical and analytical tools to assess economic theories in solving practical business problems.
Study of Managerial Economics helps in enhancement of analytical skills, assists in rational configuration as well as solution of problems. While microeconomics is the study of decisions made regarding the allocation of resources and prices of goods and services, macroeconomics is the field of economics that studies the behavior of the economy as a whole (i.e. entire industries and economies). Managerial Economics applies micro-economic tools to make business decisions. It deals with a firm.
The use of Managerial Economics is not limited to profit-making firms and organizations. But it can also be used to help in decision-making process of non-profit organizations (hospitals, educational institutions, etc). It enables optimum utilization of scarce resources in such organizations as well as helps in achieving the goals in most efficient manner. Managerial Economics is of great help in price analysis, production analysis, capital budgeting, risk analysis and determination of demand.
Managerial economics uses both Economic theory as well as Econometrics for rational managerial decision making. Econometrics is defined as use of statistical tools for assessing economic theories by empirically measuring relationship between economic variables. It uses factual data for solution of economic problems. Managerial Economics is associated with the economic theory which constitutes “Theory of Firm”. Theory of firm states that the primary aim of the firm is to maximize wealth. Decision making in managerial economics generally involves establishment of firm’s objectives, identification of problems involved in achievement of those objectives, development of various alternative solutions, selection of best alternative and finally implementation of the decision.
The following figure tells the primary ways in which Managerial Economics correlates to managerial decisionmaking.
What to produce?
How to produce?
For whom to produce?
To answer these questions, a firm makes use of managerial economics principles.
The first question relates to what goods and services should be produced and in what amount/quantities. The managers use demand theory for deciding this. The demand theory examines consumer behaviour with respect to the kind of purchases they would like to make currently and in future; the factors influencing purchase and consumption of a specific good or service; the impact of change in these factors on the demand of that specific good or service; and the goods or services which consumers might not purchase and consume in future. In order to decide the amount of goods and services to be produced, the managers use methods of demand forecasting.
The second question relates to how to produce goods and services. The firm has now to choose among different alternative techniques of production. It has to make decision regarding purchase of raw materials, capital equipments, manpower, etc. The managers can use various managerial economics tools such as production and cost analysis (for hiring and acquiring of inputs), project appraisal methods( for long term investment decisions),etc for making these crucial decisions.
The third question is regarding who should consume and claim the goods and services produced by the firm. The firm, for instance, must decide which is it’s niche market-domestic or foreign? It must segment the market. It must conduct a thorough analysis of market structure and thus take price and output decisions depending upon the type of market.
Managerial economics helps in decision-making as it involves logical thinking. Moreover, by studying simple models, managers can deal with more complex and practical situations. Also, a general approach is implemented. Managerial Economics take a wider picture of firm, i.e., it deals with questions such as what is a firm, what are the firm’s objectives, and what forces push the firm towards profit and away from profit. In short, managerial economics emphasizes upon the firm, the decisions relating to individual firms and the environment in which the firm operates. It deals with key issues such as what conditions favour entry and exit of firms in market, why are people paid well in some jobs and not so well in other jobs, etc. Managerial Economics is a great rational and analytical tool.
Managerial Economics is not only applicable to profit-making business organizations, but also to non- profit organizations such as hospitals, schools, government agencies, etc.
Principles of Managerial Economics
Economic principles assist in rational reasoning and defined thinking. They develop logical ability and strength of a manager. Some important principles of managerial economics are:
Marginal and Incremental Principle
This principle states that a decision is said to be rational and sound if given the firm’s objective of profit maximization, it leads to increase in profit, which is in either of two scenarios-
If total revenue increases more than total cost.
If total revenue declines less than total cost.
Marginal analysis implies judging the impact of a unit change in one variable on the other. Marginal generally refers to small changes. Marginal revenue is change in total revenue per unit change in output sold. Marginal cost refers to change in total costs per unit change in output produced (While incremental cost refers to change in total costs due to change in total output).The decision of a firm to change the price would depend upon the resulting impact/change in marginal revenue and marginal cost. If the marginal revenue is greater than the marginal cost, then the firm should bring about the change in price.
Incremental analysis differs from marginal analysis only in that it analysis the change in the firm's performance for a given managerial decision, whereas marginal analysis often is generated by a change in outputs or inputs. Incremental analysis is generalization of marginal concept. It refers to changes in cost and revenue due to a policy change. For example - adding a new business, buying new inputs, processing products, etc. Change in output due to change in process, product or investment is considered as incremental change. Incremental principle states that a decision is profitable if revenue increases more than costs; if costs reduce more than revenues; if increase in some revenues is more than decrease in others; and if decrease in some costs is greater than increase in others.
Equi-marginal Principle
Marginal Utility is the utility derived from the additional unit of a commodity consumed. The laws of equi-marginal utility states that a consumer will reach the stage of equilibrium when the marginal utilities of various commodities he consumes are equal. According to the modern economists, this law has been formulated in form of law of proportional marginal utility. It states that the consumer will spend his money-income on different goods in such a way that the marginal utility of each good is proportional to its price, i.e.,
MUx / Px = MUy / Py = MUz / Pz
Where, MU represents marginal utility and P is the price of good.
Similarly, a producer who wants to maximize profit (or reach equilibrium) will use the technique of production which satisfies the following condition:
MRP1 / MC1 = MRP2 / MC2 = MRP3 / MC3
Where, MRP is marginal revenue product of inputs and MC represents marginal cost.
Thus, a manger can make rational decision by allocating/hiring resources in a manner which equalizes the ratio of marginal returns and marginal costs of various use of resources in a specific use.
Opportunity Cost Principle
By opportunity cost of a decision is meant the sacrifice of alternatives required by that decision. If there are no sacrifices, there is no cost. According to Opportunity cost principle, a firm can hire a factor of production if and only if that factor earns a reward in that occupation/job equal or greater than it’s opportunity cost. Opportunity cost is the minimum price that would be necessary to retain a factor-service in it’s given use. It is also defined as the cost of sacrificed alternatives. For instance, a person chooses to forgo his present lucrative job which offers him Rs.50000 per month, and organizes his own business. The opportunity lost (earning Rs. 50,000) will be the opportunity cost of running his own business.
Time Perspective Principle
According to this principle, a manger/decision maker should give due emphasis, both to short-term and long-term impact of his decisions, giving apt significance to the different time periods before reaching any decision. Short-run refers to a time period in which some factors are fixed while others are variable. The production can be increased by increasing the quantity of variable factors. While long-run is a time period in which all factors of production can become variable. Entry and exit of seller firms can take place easily. From consumers point of view, short-run refers to a period in which they respond to the changes in price, given theaste and preferences of the consumers, while long-run is a time period in which the consumers have enough time to respond to price changes by varying their tastes and preferences.
Discounting Principle
According to this principle, if a decision affects costs and revenues in long-run, all those costs and revenues must be discounted to present values before valid comparison of alternatives is possible. This is essential because a rupee worth of money at a future date is not worth a rupee today. Money actually has time value. Discounting can be defined as a process used to transform future dollars into an equivalent number of present dollars. For instance, $1 invested today at 10% interest is equivalent to $1.10 next year.
FV = PV*(1+r)t
Where, FV is the future value (time at some future time), PV is the present value (value at t0, r is the discount (interest) rate, and t is the time between the future value and present value.
Role of a Managerial Economist
A managerial economist helps the management by using his analytical skills and highly developed techniques in solving complex issues of successful decision-making and future advanced planning.
The role of managerial economist can be summarized as follows:
#He studies the economic patterns at macro-level and analysis it’s significance to the specific firm he is working in.
#He has to consistently examine the probabilities of transforming an ever-changing economic environment into profitable business avenues.
#He assists the business planning process of a firm.
#He also carries cost-benefit analysis.
#He assists the management in the decisions pertaining to internal functioning of a firm such as changes in price, investment plans, type of goods /services to be produced, inputs to be used, techniques of production to be employed, expansion/ contraction of firm, allocation of capital, location of new plants, quantity of output to be produced, replacement of plant equipment, sales forecasting, inventory forecasting, etc.
#In addition, a managerial economist has to analyze changes in macro- economic indicators such as national income, population, business cycles, and their possible effect on the firm’s functioning.
#He is also involved in advicing the management on public relations, foreign exchange, and trade. He guides the firm on the likely impact of changes in monetary and fiscal policy on the firm’s functioning.
#He also makes an economic analysis of the firms in competition. He has to collect economic data and examine all crucial information about the environment in which the firm operates.
#The most significant function of a managerial economist is to conduct a detailed research on industrial market.
#In order to perform all these roles, a managerial economist has to conduct an elaborate statistical analysis.
#He must be vigilant and must have ability to cope up with the pressures.
#He also provides management with economic information such as tax rates, competitor’s price and product, e. They give their valuable advice to government authorities as well.
#At times, a managerial economist has to prepare speeches for top management.
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