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MARGINAL UTILITY AND DEMAND: An explanation of the law of demand and the negatively-sloped demand curve can be found in the analysis of marginal utility and especially the law of diminishing marginal utility. This explanation rests on two propositions. One, the law of diminishing marginal utility means that the marginal utility obtained from consuming a good declines as the quantity consumed increases. Two, the marginal utility of a good underlies the demand price that buyers are willing and able to pay for a good. When combined, these two propositions indicate that the demand price buyers are willing and able to pay for a good declines as the quantity demanded (and consumed) increases. And this is the law of demand.
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                           GRAPHICAL ANALYSIS: The process of investigating phenomena, especially economic phenomena, in a systematic manner using diagrams and graphs. Graphical analysis is commonly used to display abstract scientific relations, then to manipulate those relations to gain greater understanding of real world events. The market model is a primary example of graphical analysis. Graphs are two-dimensional pictures used to represent economic relations between two (or more) variables. Graphical analysis is most interesting and useful when it combines two or more relations into a single diagram. The interaction among these relations is then analyzed for insight into the workings of the economic world. A Primer On Graphs | Consider three common types of graphs:- Pie Chart: A graph commonly used to present the division of a total among parts is a pie chart. Click the [Pie Chart] button to illustrate. This particular pie chart represents the division of national income among different factor payments--wages, interest, rent, and profit. The pie is the total and each slice represents the portion distributed to each category. Pie charts are a handy way to present information, but are not well suited for more involved economic analysis.
- Bar Chart: A graph used to present data for discrete categories is a bar chart. Click the [Bar Chart] button to illustrate. This bar chart indicates the unemployment rate for each of five demographic groups--total population, males, females, whites, and non-whites. A bar chart provides a useful way to compare information about different groups or categories.
- Line Graph: A graph that tends to be most useful in the construction of graphical models and in doing economic analysis is a line graph. Click the [Line Graph] button to illustrate. This particular line graph shows the relation between two variables--price and quantity. Such line graphs are ideally suited for illustrating scientific principles and hypotheses. They can be used to show how one variable (quantity) is affected by changes in another variable (price).
Two RelationsTwo alternative relations are commonly illustrated with line graphs.- Positive or Direct: One type of line graph illustrated by clicking the [Positive Relation] button represents a positive or direct relation between two variables, such as price and quantity. With this line, a higher price is related to a larger quantity. Another way of stating this is that the slope of the line is positive. A common positive relation in economics is the market supply curve.
- Negative or Indirect: A second type of line, one that represents a negative or indirect relation between two variables, such as price and quantity, can be seen by clicking the [Negative Relation] button. With this line, a lower price is related to a larger quantity. Another way of stating this is that the slope of the line is negative. A common negative relation in economics is the market demand curve.
 Recommended Citation:GRAPHICAL ANALYSIS, AmosWEB Encyclonomic WEB*pedia, http://www.AmosWEB.com, AmosWEB LLC, 2000-2025. [Accessed: July 18, 2025]. Check Out These Related Terms... | | | | | | Or For A Little Background... | | | | | | | | | And For Further Study... | | | | | | | | | | | | |
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BROWN PRAGMATOX [What's This?]
Today, you are likely to spend a great deal of time browsing through a long list of dot com websites seeking to buy either a case of blank recordable DVDs or a pair of red goulashes with shiny buckles. Be on the lookout for mail order catalogs with hidden messages. Your Complete Scope
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Sixty percent of big-firm executives said the cover letter is as important or more important than the resume itself when you're looking for a new job
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"A winner is someone who recognizes his God-given talents, works his tail off to develop them into skills, and uses those skills to accomplish his goals. " -- Larry Bird, basketball player
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WLLN Weak Law of Large Numbers
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