1. © 2013 Pearson Education, Inc. 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 Slide 7 - 1

2. True or False A sample is a collection of people or objects taken from the population of interest. A. True B. False Slide 7 - 2 © 2013 Pearson Education, Inc. Response Counter

3. A numerical value that characterizes some aspect of a population is called a A. statistic. B. census. C. parameter. D. sample. Slide 7 - 3 © 2013 Pearson Education, Inc. Response Counter

4. A numerical characteristic of a sample of data is called a A. statistic. B. sample. C. population. D. parameter. Slide 7 - 4 © 2013 Pearson Education, Inc. Response Counter

5. True or False We use parameters to estimate statistics. A. True B. False Slide 7 - 5 © 2013 Pearson Education, Inc. Response Counter

6. True or False An important difference between statistics and parameters is that parameters are knowable. A. True B. False Slide 7 - 6 © 2013 Pearson Education, Inc. Response Counter

7. 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. A. True B. False Slide 7 - 7 © 2013 Pearson Education, Inc. Response Counter

8. 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 Slide 7 - 8 © 2013 Pearson Education, Inc. Response Counter

9. 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. A. True B. False Slide 7 - 9 © 2013 Pearson Education, Inc. Response Counter

10. The probability distribution of has a special name: A. population distribution B. sampling distribution C. probability density function D. standard normal distribution Slide 7 - 10 © 2013 Pearson Education, Inc. Response Counter

11. True or False Bias is measured using the center of the sampling distribution: It is the distance between the center and the population value. A. True B. False Slide 7 - 11 © 2013 Pearson Education, Inc. Response Counter