For example, expect the cost of a new roof with tile to be more than wood shingles. However, heavier and longer-lasting shingles of a low cost material can cost as much or more than the low-end of a more expensive roofing material, such as tile.he cost of a new roof with asphalt is among the lowest of any popular material and they carry a moderate lifespan. Advantages: 1  Average 20+ year lifespan. 2  Low cost.
Characteristics of Security Indexes. 1. A price weighted series is the average of the stocks' prices in the series. It is calculated by adding together each stock price and dividing the total by the number of stocks in the series.
The following are prominent characteristics of a competitive oligopoly: 1. Dominance by a few firms -- While the industry may have several firms that operate with industry, in an oligopoly market, only a few large firms control and dominate the market. A prime example of this is the oil industry. competitive oligopoly is a market that is dominated by only a few large firms. These firms prefer not to compete via price wars and therefore compete in various other ways, such as advertising, product differentiation and barriers.