Statistics 1
What is a quantitative variable?
A variable that represents a numerical quantity.
In the Avengers: Age of Ultron, Tony Starke, Bruce Banner, and Thor created an artificial intelligence-powered android named Vision; who ultimately defeated Ultron. Which infinity stone was Vision created with, giving him his powers?
The Mind Stone
A teacher randomly selects 25 students from a school roster to complete a survey. What sampling method is being used?
A. Convenience sample
B. Voluntary response sample
C. Stratified sample
D. Simple random sample
D: Simple Random Sample
What was the name of Luke Skywalker's home planet?
Tatooine
Which situation represents an experiment rather than an observational study?
A. Surveying voters about their opinions
B. Reviewing medical records from past patients
C. Assigning patients to receive either a new drug or a placebo
D. Recording temperatures over a month
C: Assigning patients to receive either a new drug or a placebo
A survey asks students what social media platform they use most often. What type of variable is being measured?
Qualitative Categorical
In Stranger Things, what is Eleven's favorite food?
Eggo Waffles
Which statement best describes a correlation of r=−0.85
A. Strong positive association
B. Weak positive association
C. Weak negative association
D. Strong negative association
D: Strong Negative Association
What is the name of Gandalf's horse?
Shadowfax
A confidence interval is used to:
A. Guarantee the population parameter is in the interval
B. Estimate a population parameter using sample data
C. Determine causation
D. Eliminate sampling variability
B. Estimate a population parameter using sample data
A histogram is most appropriate for displaying:
A. The relationship between two quantitative variables
B. A single quantitative variable's distribution
C. A categorical variable's frequencies only
D. A sample space
B: A single quantitative variable's distribution.
In the TV show Friends, what is the name Ross Geller's pet monkey?
Marcel
If two variables have a correlation of 0.90, which conclusion is appropriate?
A. One variable causes the other
B. There is a strong positive association
C. The variables must have a linear slope of 0.90
D. The variables are identical
B: There is a strong positive association
What band was the name of the band where Ozzy Osbourne was the lead singer?
Black Sabbath
If a distribution is skewed right, which statement is usually true?
A. Mean < Median
B. Mean = Median
C. Mean > Median
D. Mean = 0
C. Mean > Median
Which measure of center is most resistant to outliers?
A. Mean
B. Median
C. Range
D. Standard deviation
B: Median
Which singer is known for the albums SOUR and GUTS?
Olivia Rodrigo
A six-sided die is rolled once. What is the probability of rolling a number greater than 4?
2/6 or 1/3
In the movie Coco, what is Miguel's family's ocupation/traditional business?
Shoemakers
Which of the following would provide the strongest evidence for a cause-and-effect relationship?
A. A scatterplot showing strong correlation
B. An observational study with a large sample
C. A randomized controlled experiment
D. A convenience sample survey
C. A randomized controlled experiment
The mean test score of a class is 82, but one student scores a 15. How will the outlier likely affect the mean?
A. Increase it significantly
B. Leave it unchanged
C. Decrease it
D. Make it equal to the median
C: Decrease it
What does "NPC" stand for in gaming?
Non-Player Character
A statistic is:
A. A numerical summary of a population
B. A numerical summary of a sample
C. The same thing as a parameter
D. Any graph of data
B: A numerical summary of a sample
What was Disney's first full-length animated feature film?
Snow White
A sample of 200 voters is used to estimate the percentage of all voters who support a new policy. What is the main reason the sample percentage may differ from the actual population percentage?
A. Sampling variability
B. Correlation
C. Causation
D. Experimental bias
A: Sampling Variability