Use the following
In each situation, indicate whether the method of data collection is biased. If it is, briefly explain why.
-A campus bookstore is holding a drawing to give away five free textbooks (one per student). Students enter the contest by writing their name and contact information on an index card. The index cards were placed in a bowl, thoroughly mixed around, and five cards were selected. Those five students were contacted and received their free textbook.

Question

Use the following 
In each situation, indicate whether the method of data collection is biased. If it is, briefly explain why.
-A campus bookstore is holding a drawing to give away five free textbooks (one per student). Students enter the contest by writing their name and contact information on an index card. The index cards were placed in a bowl, thoroughly mixed around, and five cards were selected. Those five students were contacted and received their free textbook.

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The Answer of Use the following 
In each situation, indicate whether the method of data collection is biased. If it is, briefly explain why.
-A campus bookstore is holding a drawing to give away five free textbooks (one per student). Students enter the contest by writing their name and contact information on an index card. The index cards were placed in a bowl, thoroughly mixed around, and five cards were selected. Those five students were contacted and received their free textbook.

Use the Following