Single ladies variables
Bi-variate Data
Collecting Dat A
Prob-bob-bility
Random Variables and questions
100
What is the mean for this data set:
118 330 338 238 421 109 329 434 300
290.778
100
Which of these points would be considered a high leverage point with respect to the regression?
~(80,70)
100
This is the main advantage of using a stratified random sample.
What is that it is precise?
100
There is a 30% chance I order a burger, there is a 45% chance that I order the tacos. What is the probability that I order a burger or the tacos?
75%
100
There is a 5% chance that you beat Mr. Gregg at any gam. Literally any game. How many games do you expect to have to play before your first win over Mr. Gregg?
20 games.
200
Find the 5-number summary for this set of numbers.
12,14,14,14.5,17,18,23,30,40,42,43,43,44,44,44
12,14.5,30,43,44
200
What does an r value of .94 tell us?
Strong and positive association
200
A principal takes an alphabetized list of student names and picks a random starting point. Every 20th student is selected to take a survey.
What type of sampling method was used?
Systematic random sampling
200
There is a 61.3% chance that Wilt makes a free throw. If we were using a table of random digits to simulate him shooting 100 free throws, I would select 100 3 digit numbers where these numbers represents him making a free throw.
000-612 represent a make
200
The standard deviation for the number of cookies I eat in a week is 3.6. I ate a lot of cookies in a 4 week span in December and was gifted a bonus 4 cookies from a student. The number of cookies eaten is modeled with the equation C = 4X+4. What is the standard deviation of C?
16
300
A company realized their salaries are normally distributed with a mean of $91,000 and a standard deviation of $8,500. Molly is making $77,000 at the company and is feeling pretty wealthy. What percent of people at her company make more money that Molly?
95% of people
300
What is the correlation coefficient from this set of data?
.853
300
Everyone knows Alvin from Alvin and the chipmunks, what are the names of Alvin's 2 brothers?
Theodore and Simon
300
There is a 30% probability that a person owns a cat. There is a 40% probability that a person owns a dog. What is the probability that they own a cat and a dog?
.58
300
Mr. Gregg went to college at this University.
What is Warner Pacific University?
400
Beyonce dropped this spiteful gem of an album in 2016, her first album since 2013 when she released the self titled, "Beyonce."
What is Lemonade?
400
What is the Least - Squares Regression Line for this data output?
y-hat = 44.54 +.555x
400
I asked a student how much they studied for their test. They told me an overestimate. What sort of bias is this?
Self-reported response bias.
400
This person was the former host of Price is Right and was punched by Adam Sandler in the movie, Happy Gilmore.
Who is Bob Barker?
400
This person was the first British monarch to address the US congress.
Who is Queen Elizabeth II?
500
Rhinos weights are normally distributed with a mean of 5,000 lbs and a standard deviation of 1,000 lbs. What is the z-score of a rhino that ways 6,500 lbs?
Z = 1.5
500
Thas mammal is most populous in the US and is the largest mammal in America.
What is a Bison?
500
Name 3 of the 5 components of a well designed survey
randomization, replication, control of confounding variables, comparisons of at least 2 groups
500
This is the year of the first ever episode of Spongebob Squarepants.
What is 1999?
500
This planet is the 7th furthest from the sun in our solar system.
What is Uranus?