Compare and contrast internal validity and external validity. discuss the various costs a company might incur if it does not ensure that its data mining results are valid. discuss reputational damage that might accrue to a company if its data mining results are not valid.

When determining the classification of data, which one of the following is the most important consideration? a. processing systemb. valuec. storage mediad. accessibility

Communication is the exchange of information. true false

What is wi-fi infrastructure? a metropolitan area network that uses radio signals to transmit and receive data a communications technology aimed at providing high-speed wireless data over metropolitan area networks a means by which portable devices can connect wirelessly to a local area network, using access points that send and receive data via radio waves includes the inner workings of a wi-fi service or utility, including the signal transmitters, towers, or poles and additional equipment required to send out a wi-fi signal