Statistics: Data Collection,
Experimental Design &
Sampling Techniques –
Study Guide
Updated Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
, What is the first step in designing a statistical study? Identify the variables of interest and the population of the study.
What should be developed for collecting data in a A detailed plan for collecting representative data.
statistical study?
What is the purpose of collecting data in a statistical To describe and interpret the data using statistical techniques.
study?
What is an observational study? A study where a researcher observes and measures characteristics of interest
without changing existing conditions.
What is an experimental study? A study where a researcher applies a treatment to part of a population and
observes the responses.
What is a placebo group in an experimental study? A second group that has no treatment applied and usually receives a placebo.
What is a simulation in data collection? The use of a mathematical or physical model to reproduce the conditions of a
situation or process.
What is a survey? An investigation of one or more characteristics of a population, usually conducted
by asking questions.
What are the three key elements for a well-designed Control, randomization, and replication.
experiment?
What is a confounding variable? A variable that occurs when an experimenter cannot distinguish the effects of
different factors on the variable.
What is the placebo effect? When a subject reacts favorably to a placebo, believing they are receiving
treatment.
What is a single-blind technique? A technique where the subjects do not know whether they are receiving a treatment
or a placebo.
Experimental Design &
Sampling Techniques –
Study Guide
Updated Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
, What is the first step in designing a statistical study? Identify the variables of interest and the population of the study.
What should be developed for collecting data in a A detailed plan for collecting representative data.
statistical study?
What is the purpose of collecting data in a statistical To describe and interpret the data using statistical techniques.
study?
What is an observational study? A study where a researcher observes and measures characteristics of interest
without changing existing conditions.
What is an experimental study? A study where a researcher applies a treatment to part of a population and
observes the responses.
What is a placebo group in an experimental study? A second group that has no treatment applied and usually receives a placebo.
What is a simulation in data collection? The use of a mathematical or physical model to reproduce the conditions of a
situation or process.
What is a survey? An investigation of one or more characteristics of a population, usually conducted
by asking questions.
What are the three key elements for a well-designed Control, randomization, and replication.
experiment?
What is a confounding variable? A variable that occurs when an experimenter cannot distinguish the effects of
different factors on the variable.
What is the placebo effect? When a subject reacts favorably to a placebo, believing they are receiving
treatment.
What is a single-blind technique? A technique where the subjects do not know whether they are receiving a treatment
or a placebo.
