2. Statistics is the science of conducting studies to 3. The amount of time need

2. Statistics is the science of conducting studies to 3. The amount of time needed to run the Boston marathon is an example of which type of variable? 4. What type of sampling is being employed if the country is divided into economic classes and a sample is chosen from each class to be surveyed? 5. If a researcher manipulates one of the variables and tries to determine how the manipulation influences other variables the researcher is conducting a(n) 6. Which of the following correctly describes the relationship between a sample and a population? 7. What level of measurement possesses all the characteristics of interval measurement and there exists a true zero? 8. Which of the following best defines the relationship between confounding dependent and independent variables? 9. The number of birds in a tree is an example of a continuous variable. True False10. In a research study it is always preferable for the researcher to choose his participants as carefully as possible rather than randomly accept samples. True False