Math_533_sample_test CHAPTER 3 DESCRIBING DATA: SUMMARY MEASURES MULTIPLE CHOICE QUESTIONS

CHAPTER 3 DESCRIBING DATA: SUMMARY MEASURES MULTIPLE CHOICE QUESTIONS In the following multiple-choice questions, please circle the correct answer. 1. Which of the following are the three most common measures of central location? a. Mean, median and mode b. Average, variance and standard deviation c. Mode, sample mean, and sample variance d. Mean, median, and average ANSWER: a 2. Which of the following are considered measures of association? a. Mean and variance b. Variance and correlation c. Covariance and correlation d. Covariance and variance ANSWER: c 3. The difference between the first and third quartile is called the . a. interquartile range b. interdependent range c. unimodal range d. common occurrence range e. none of the above ANSWER: a 32 Chapter 3 4. If a value represents the 95th percentile, this means: a. 95% of all values are below this point b. 95% of all values are above this point c. 95% of the time you will observe this value d. there is a 5% chance that this value is incorrect e. none of the above ANSWER: a 5. For a boxplot, the point inside the box indicates the location of the __________. a. mean b. median c. minimum value d. maximum value ANSWER: a 6. For a boxplot, the vertical line inside the box indicates the location of the______. a. mean b. median c. mode d. minimum value e. maximum value ANSWER: b 7. Suppose that a histogram of a data set is approximately symmetric and "bell shaped". Approximately percent of the observations are within three standard deviation of the me