1) A librarian wants to survey visitors. She decides to interview every 10th person who walks through the front door starting from a randomly selected arrival. a) SYSTEMATIC b) CLUSTER c) SIMPLE RANDOM d) STRATIFIED 2) A researcher wants to study student health across a massive city. Instead of visiting every school, they randomly select 5 specific schools (the "groups") and survey every single student within those chosen schools. a) SYSTEMATIC b) CLUSTER c) SIMPLE RANDOM d) STRATIFIED 3) To determine the winner of a door prize at a company party, the HR manager puts everyone’s name into a spinning drum, mixes them thoroughly, and pulls out one name blindly. a) SYSTEMATIC b) CLUSTER c) SIMPLE RANDOM d) STRATIFIED 4) A principal wants to ensure that the opinions of Freshmen, Sophomores, Juniors, and Seniors are all equally represented. She divides the student body into these four year levels and then randomly selects 50 students from each level. a) SYSTEMATIC b) CLUSTER c) SIMPLE RANDOM d) STRATIFIED 5) On an assembly line producing 1,000 lightbulbs a day, a quality control manager uses a random number generator to pick 100 individual bulb ID numbers from the entire day's inventory to test for defects. a) SYSTEMATIC b) CLUSTER c) SIMPLE RANDOM d) STRATIFIED

CHAPTER 3: SAMPLING LET'S PRACTICE

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