The purpose of sampling is to provide various types of statistical information of a qualitative or quantitative nature about the whole by examining a few

A job that involves selling a company´s products or services as well as being responsible for winning new customers and looking after existing customer accounts.

To sell something now and let the purchaser pay for it later. (source: http://idioms.thefreedictionary.com/sell+on+credit)

A note that is used as proof of the sale or purchase of goods

The exchange of goods, property, or services for an agreed sum of money or credit at a lower price than the normal value.

Number of individuals working for a particular company or linked somehow to it, engaged in commercial work promoting products or services that the company offers

Compensation, consideration, or fee paid for a license or privilege to use an intellectual property (brand, copyright, patent, process) or a natural resource (fishing, hunting,

The sale of goods and services from individuals or businesses to the end-user. (source: http://en.wikipedia.org/wiki/Retail )

the sale of goods and services from individuals or businesses to the end-user. (source: http://en.wikipedia.org/wiki/Retail)

Sale of goods to the general public and not to other businesses. (source: http://www.ehow.com/facts_6798176_meaning-retail-trade_.html#ixzz26SFNmuy6)