Bias is the average error of a forecast model

Writing an online blog uses the same principles as writing a traditional report

Indicate whether the statement is true or false.

How have social media tools most likely affected personal selling?

A) reducing the use of person-to-person selling efforts B) increasing the costs of selling products and services C) changing the basic fundamentals of interpersonal selling D) increasing the number of product reports given to customers E) slowing the sales-force response rate to customers' problems