Data, Sampling, and Variation in Data and Sampling · Example 5
Determine the type of sampling used (simple random, stratified, systematic, cluster, or convenience).
(a) A soccer coach selects six players from a group of boys aged eight to ten, seven players from a group of boys aged 11 to 12, and three players from a group of boys aged 13 to 14 to form a recreational soccer team.
(b) A pollster interviews all human resource personnel in five different high tech companies.
(c) A high school educational researcher interviews 50 high school female teachers and 50 high school male teachers.
(d) A medical researcher interviews every third cancer patient from a list of cancer patients at a local hospital.
(e) A high school counselor uses a computer to generate 50 random numbers and then picks students whose names correspond to the numbers.
(f) A student interviews classmates in his algebra class to determine how many pairs of jeans a student owns, on average.
OpenStax, Statistics · §1.2 Data, Sampling, and Variation in Data and Sampling · Example 5
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