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entify the sampling m- provided each numbe of 2,000 was sought t - city's public schoo chools is 100 student:

entify the sampling m- provided each numbe of 2,000 was sought t - city's public schoo chools is 100 student:

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 4E
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Test II. Random Sampling Techniques Directions: Identify the sampling method being used in each scenario. Write your answer on the space provided each number. ( 1. A sample of 2,000 was sought to estimate the average achievement in science of fifth graders in a city's public schools. The average fifth grade enrolment in the city's elementary schools is 100 students. Thus, 20 schools were randomly selected and within each of those schools all fifth graders were tested. 2. A researcher is interested in maximum-security inmates. She groups inmates by the type of crime committed, determines the percentage of the total in each crime category, and uses that percentage to determine the number of inmates randomly selected from each group. 3. A researcher has a population of 100 third grade children from a local school district from which a sample of 25 children is to be selected. Each child's name is put on a lei and each child is assigned a number from 1 to 100. Then the numbers 1 to 100 aro written on separate pieces of paper and shuffled. Finally, the researcher picks 25 slips or paper and the numbers on the paper determine the 25 participants.
Transcribed Image Text:Test II. Random Sampling Techniques Directions: Identify the sampling method being used in each scenario. Write your answer on the space provided each number. ( 1. A sample of 2,000 was sought to estimate the average achievement in science of fifth graders in a city's public schools. The average fifth grade enrolment in the city's elementary schools is 100 students. Thus, 20 schools were randomly selected and within each of those schools all fifth graders were tested. 2. A researcher is interested in maximum-security inmates. She groups inmates by the type of crime committed, determines the percentage of the total in each crime category, and uses that percentage to determine the number of inmates randomly selected from each group. 3. A researcher has a population of 100 third grade children from a local school district from which a sample of 25 children is to be selected. Each child's name is put on a lei and each child is assigned a number from 1 to 100. Then the numbers 1 to 100 aro written on separate pieces of paper and shuffled. Finally, the researcher picks 25 slips or paper and the numbers on the paper determine the 25 participants.
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