$2$

Scanner data are used in quantitative research obtained from scanner readings of Universal Product Code $($UPC$)$ labels at checkoutcounters the data from these purchases are likely to be acquired by leading marketing research firms such as which use this information to help iesering consumer packaged$-$goods firms $($e$.$g$.,$ Kellogg's, Pepsi, Kraft$)$ assess what is happening in the marketplace.

$00$:$28$:$49$

Multiple Choice

Yankelovich

MediaMark Research and NOP World

b$.$

Roper Center for Public Research and Research and Markets

Nielsen

NOP World