Survey Experiment Observational Study

You want to see if students who have a 4.0 grade point average study more than those who do not.

• experiment

• observational study

To test the effects of breakfast on grades I ask my students if they ate breakfast and then compare the breakfast eaters grades to the non-breakfast eaters. This is an example of:

• Observational study

• Experiment

Researchers wanted to know if there is a link between proximity to high-tension wires and the rate of leukemia in children. To conduct the study, researchers compared the rate of leukemia for children who lived within 1/2 mile of high-tension wires to the rate of leukemia for children who did not live within 1/2 mile of high-tension wires.

• Observational Study

• Experiment

a study in which the researcher attempts to understand cause-and-effect relationships without assigning subjects to groups or deciding which treatments each group receives

• survey

• observational study

• experiment

In an ________________, a researcher observes and measures characteristics of interest of part of the population but does not change existing conditions.

• Experiment

• Observational Study

Individuals are observed and variables are measured without controlling the individuals or the environment

• population

• observational study

• experiment

• secondary data

You want to see if students who have a 4.0 grade point average study more than those who do not.

• survey

• observational study

• experiment

You want to find out if people who eat a candy bar immediately before a math test get higher scores than people who do not.

• survey

• observational study

• experiment

You want to compare the health of students who walk to school to the health of students who ride the bus

• survey

• observational study

• experiment

Determining if students using a calculator on a math final exam score better than students who do not use a calculator 

• Cenus

• Sample Survey

• Experiment

• Observational Study