Below you are given the examination scores of 20 students. 
a.
Construct a frequency distribution for this data. Let the first class be 50 - 59.
b.
Construct a cumulative frequency distribution.
c.
Construct a relative frequency distribution.
d.
Construct a cumulative relative frequency distribution.
Definitions:
Product Differentiation
The strategy of distinguishing a product or service from others in the market to make it more attractive to a specific target market.
Monopolistic Competition
A market structure characterized by many firms selling products that are similar but not identical, allowing for some degree of market power.
Buyers
Individuals or entities that exchange money for goods or services.
Perfect Competitor
A market structure where numerous small firms compete against each other, and products are homogenous, with no single firm able to influence the market price.
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