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Active Learning Lecture Slides For use with Classroom Response Systems Introductory Statistics: Exploring the World through Data, 1e by Gould and Ryan Chapter 7: Survey Sampling and Inference © 2013 Pearson Education, Inc. Slide 7 - 1 True or False A sample is a collection of people or objects taken from the population of interest. 100% A. B. True False 0% Response Counter A. © 2013 Pearson Education, Inc. B. Slide 7 - 2 A numerical value that characterizes some aspect of a population is called a 75% A. statistic. B. census. C. parameter. D. sample. 25% 0% Response Counter A. © 2013 Pearson Education, Inc. B. 0% C. D. Slide 7 - 3 A numerical characteristic of a sample of data is called a 67% A. statistic. B. sample. C. population. D. parameter. 33% 0% Response Counter A. © 2013 Pearson Education, Inc. B. C. 0% D. Slide 7 - 4 True or False We use parameters to estimate statistics. 75% A. B. True False 25% Response Counter A. © 2013 Pearson Education, Inc. B. Slide 7 - 5 True or False An important difference between statistics and parameters is that parameters are knowable. 75% A. B. True False 25% Response Counter A. © 2013 Pearson Education, Inc. B. Slide 7 - 6 True or False Statisticians have developed notation for keeping track of parameters and statistics. In general, Greek characters are used to represent population parameters. Statistics (estimates based on a sample) are represented by English letters. 100% A. B. True False 0% Response Counter A. © 2013 Pearson Education, Inc. B. Slide 7 - 7 In which way(s) can bias (a tendency to produce an untrue value) enter a survey A. from taking a sample that is not representative of he population B. from asking questions that do not produce a true answer C. from statistics that are naturally biased D. All of the above Response Counter 0% A. © 2013 Pearson Education, Inc. 100% 0% B. 0% C. D. Slide 7 - 8 True or False No matter how many different samples we take, the value of p (the population proportion) changes from sample to sample, but the value of is always the same. 50% A. B. 50% True False Response Counter A. © 2013 Pearson Education, Inc. B. Slide 7 - 9 The probability distribution of a special name: A. population distribution B. sampling distribution has 50% 25% C. probability density function D. standard normal distribution Response Counter 25% 0% A. © 2013 Pearson Education, Inc. B. C. D. Slide 7 - 10 True or False Bias is measured using the center of the sampling distribution: It is the distance between the center and the population value. 50% A. B. 50% True False Response Counter A. © 2013 Pearson Education, Inc. B. Slide 7 - 11