If you have data that is in case form format, and you want to use the xtabs() function to construct a crosstabulation of categorical variables, would there be a variable in front of the '~' sign in the xtabs() function?
State Yes or No. Explain your response.

Which of the following is a way the operating system prevents unknown or unauthorized users from accessing the system?

Freya realizes she does not have enough in her bank account to use the debit card. she decides to use a credit card instead. which questions should freya answer before using a credit card? check all that apply. can i pay at least the minimum payment each month? can i make payments on time and avoid late fees? will i have to take out a loan? how much in finance charges can i afford to pay? should i talk to a consumer credit counseling service?

Austin rare coins, inc., buys and sells rare coins, bullion, and other precious metals through eight web sites with different domain names. an unknown individual took control of austin's servers and transferred the domain names to another registrant without austin's permission. the new registrant began using the domain names to host malicious content—including hate letters to customers and fraudulent contact information—and to post customers' credit-card numbers and other private information, thereby tarnishing austin's goodwill. austin filed a suit in a federal district court against the new registrant under the anticybersquatting consumer protection act. is austin entitled to a transfer of the domain names? austin rare coins, inc., buys and sells rare coins, bullion, and other precious metals through eight web sites with different domain names