Graphs Flashcards
Media sources?
Print media- newspapers
radio
television,
multimedia- websites , video games
What are Graphs in economics
Are illustrations that show the relationship between economic variables
How does graphs help us
Forecast trends,
display information,
analyze and interpret data
Present economic relationships
Limitations of a graph
Incorrect labeling
Discontinuous measurement
Missing or improper title
Inconsistency in scaling
Types of graphs
Linear graph,
time series graph
Pie chart or circle graph - Way of showing breakdown of items expressed in dollar value or percentage
Bar graph – usually compare differences between things at one point in time
Types of slopes of a straight line graph
Negative slope (inverse)
positive slope ( direct relationship)
Infinite slope ( vertical)
zero slope ( horizontal)
Definition of the four different types of slopes
Positive or direct relationship – increase in one variable lead to increase in another variable example supply curve
Negative or inverse relationship – increase in one variable will lead to the decrease in the other example demand curve
Dependent variable – variable that changes because of a change in another variable example consumption expense is dependent on the level of income
Independent variable – the variable that causes changes in the dependent variable