STAT 325 Lesson 1

A pollster walks around a busy shopping mall and approaches people passing by to ask them how often they shop at the mall

• Simple Random Sample

• Cluster Sample

• Voluntary Response Sample

• Convenience Sample

To collect data for a water quality report, a researcher stretched a rope across a lake and collected water samples every 5 meters.

• Stratified Sample

• Systematic Sample

• Simple Random Sample

• Cluster Sample

One hundred people attend a charity event, and each buys a raffle ticket. The 100 ticket stubs are put in a box and thoroughly mixed, and 10 of them are drawn. The 10 people whose tickets are drawn win a prize.

• Stratified Sample

• Simple Random Sample

• Cluster Sample

• Voluntary Response Sample

To estimate the number of words defined in a dictionary, a student randomly selected 20 different pages and counted all the defined words on each of those pages.

• Simple Random Sample

• Cluster Sample

• Stratified Sample

• Convenience Sample

In a survey about the current state of the economy, one business was selected from each page of the Yellow Pages phone directory.

• Cluster Sample

• Simple Random Sample

• Systematic Sample

• Stratified Sample

Of the U.S. senators, 30 of them voted for a particular measure. Parameter or statistic?

• Parameter

• Statistic