Experiment vs. Observational Study
Kevin goes to different public settings to take notes of the proportion of people using headphones.
What is an observational study?
This term is the acronym for Simple Random Sample
What is SRS?
This type of bias is introduced when individuals fail to respond.
What is non-response bias?
A drug company tests the effectiveness of their drugs compared to a placebo.
What is an experiment?
When randomizing treatments, you must do this to a bowl or hat to ensure random assignment
What is shake?
The first question on a survey about considering going vegan is “Do you care about the lives of innocent animals?”. What type of bias does this demonstrate?
What is questionnaire bias?
The College Board performs a survey to see how geographical location affects AP scores.
What is an observational study?
The I in STAIRS stands for this.
What is Ignore?
In trying to predict the 2024 election results, Stephanie only polled people living in New York and California. What is the vocabulary term used to describe this survey’s possible bias?
What is undercoverage?
Mr. Shreck wants to know how the amount of assigned homework affects test scores. He assigned 0, 30, and 60 minutes of homework a day for two weeks and compared scores.
What is an experiment?
If a statistic describes a sample, this describes a population.
What is a parameter?
In her project to find the average caloric intake of a student at Wootton high school, Sally decided to ask every student who enters the stadium after school. What was her sampling method?
Convenience sampling
Can you perform a hypothesis test on both an experiment and an observational study?
Yes
In this type of experiment, both those administering the treatment and the test subjects don’t know whether the subject is getting a placebo or treatment.
What is a Double Blind experiment?
A radio show asks listeners to call in to voice their opinion on abortion.
What is voluntary response bias?