1. If a variable has possible values –2, 6, and 17, then this variable is 
A) both a continuous and a discrete variable 
B) a continuous variable 
C) neither a continuous nor a discrete variable 
D) a discrete variable 
2. Based on …show more content…

 [pic] 
A) Hours spent preparing for an exam is a dependent variable. 
B) There is no relationship between the number of hours spent preparing for the exam and the average grade. …show more content…
C) observational study. 
B) independent study. D) experimental study. 
4. Which of the following correctly describes the relationship between a sample and a population? 
A) A population and a sample are not related. 
B) A sample is a group of subjects selected from a population to be studied. 
C) A sample is a group of populations that are subject to observation. 
D) A population is a group of samples that may or may not be included in a study. 
5. What is the term for a characteristic or attribute that can assume different values? 
 A) exponent B) datum C) sample D) variable