(a) There are 18 girls and 18 boys in a class. To find out their most favorite subjects in the class, 5 girls and 5 boys are selected at random for an interview. What type of sampling method is used? Is it a probability sampling or non-probability sampling? Can this method help to get rid of bias in sampling? (i) (ii) (iii) (b) To conduct a survey about the opinions of people on a new smart phone just launched to the morket the first 200 neople walking out of a shopping mall are interview. Identify the
(a) There are 18 girls and 18 boys in a class. To find out their most favorite subjects in the class, 5 girls and 5 boys are selected at random for an interview. What type of sampling method is used? Is it a probability sampling or non-probability sampling? Can this method help to get rid of bias in sampling? (i) (ii) (iii) (b) To conduct a survey about the opinions of people on a new smart phone just launched to the morket the first 200 neople walking out of a shopping mall are interview. Identify the
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 7E
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