Question

question #5
an observational study makes no attempt to affect the outcomes.
o true o false

question #6
determine if the following scenario is best described as an observational study, survey, or experiment.
a researcher wants to determine whether or not a review session will improve student test scores. the researcher divides a class into
two groups and requires one group to attend a study session then compares the test results of each group.
o survey
o experimental study
o observational study

question #7
which of the following statements best describes the main difference between an experiment and an observational study?
o an experiment divides the sample into two groups, but an observational study does not.
o observational studies divide the sample into two groups, but an experimental study does not.
o an experiment deliberately imposes some treatment on individuals to measure responses. an observational study observes
responses without imposing any treatment.
o an observational study deliberately imposes some treatment on individuals to measure responses. an experimental study
observes responses without imposing any treatment.

Explanation:

Question #5

An observational study simply observes and records data without interfering or attempting to affect the outcomes. This is a fundamental characteristic of observational studies.

In this scenario, the researcher is imposing a treatment (requiring one group to attend a study session) and then comparing the results. This is the key characteristic of an experimental study. A survey involves asking questions, and an observational study would not impose any treatment.

The main difference between an experiment and an observational study is that in an experiment, the researcher deliberately imposes a treatment to measure responses. In an observational study, the researcher only observes responses without imposing any treatment. Dividing into groups is not the defining difference.

Answer:

True

Question #6