Bias
Wording of the question is a way to bias data. T or F?
True
You are doing an experiment on tomato plants. Some plants get the new fertilizer and some get the old fertilizer. When the tomatoes are ripe, taste them and see which ones are juicier.
What are the experimental units?
The tomato plants
Which method of sampling takes every 10th person from a list?
Systematic
How much is a Caniac Combo at Canes? Before tax
15.99
What is Post Malone's favorite restaurant?
Chilis
McDonalds
Canes
Pappacitos
Canes
You want to know how PCA students feel about Sage, so you go to the 9th grade Bible class and ask those students.
This idea suffers from which type of bias (mostly)?
Convenience, Undercoverage, Nonresponse, Response
Undercoverage
Back to the tomato plants problem. What is the response variable?
measuring how juicy the tomatoes are at the end of the experiment
Which sampling method would take some students from each grade level in order to find out something about all PCA students?
Stratified
Who is the oldest?
Mr. Wyss
Mr. Morton
Mr. Bannis
Mr. Lee
Mr. Lee
Which Marvel movie's soundtrack won 2 Grammy awards?
Avengers
Captain America
Black Panther
Black Widow
Black Panther
Doing simple random sampling reduces bias in samples because you leave everything to chance. T or F?
True
Which method allows you to determine cause and effect? Treatments cause what happens.
Observational studies OR Experiments
Experiments
Which method of sampling would divide a forest into sections and then randomly choose a section and go sample all the trees in that section?
How many minutes and seconds is the world record for mile time?
Need to be within 15 seconds of the record to get this correct
3 minutes
43 seconds
What is the world record for the least amount of time for a car to go a quarter mile?
You can think of drag racing cars...
Must be within a half second
3.22 seconds
How do you feel about the Sky Ranch retreat where the busses broke down on the way there?
This question illustrates which form of bias?
Convenience, Undercoverage, Nonresponse, Response
Response
What is blinding in an experiment?
When the person receiving the treatment and/or the person measuring the response does NOT know which treatment was given/received.
How would you do a simple random sample of 50 students if there were 500 total students to choose from? Explain
Use a random number generator. Give each student a number from 1 to 500. Use randintnorep (1,500,50) to choose the 50 students.
Now that OU, UT, and A&M are all in the SEC conference starting this year, what is the mascot for ...
Auburn?
Kentucky?
LSU?
Tigers
Wildcats
Tigers
Which president is #2 all time for net worth? How much money all of their stuff is worth.
This is a president no longer alive, but lived in the 20th century.
JFK
3.1 Billion dollars
You learn that 90% of Churchgoers drink coffee by talking to the first 25 adults you see at PCA one morning.
This situation suffers from which form of bias?
Convenience, Undercoverage, Nonresponse, Response
Convenience
What are 3 characteristics of a good experimental design?
Replication
Random assignment of treatments
Control variables
Blocking
Blinding
Which variables below are categorical?
Mile Time
Phone number
Eye Color
Number of hairs on a persons head
Phone number
Eye Color
Friends
Seinfeld
The Office
The Office
What state was Tupac Shakur born in?
Illinois
New York
California
Texas
New York
East Harlem