six steps of a statistical investigation
identifying observational units
identifying categorical and quantitative variables
describing quantitative variables
simulations & probability
100
the first step of any statistical investigation.
what is "ask a research question"?
100
Shelia did a study on whether 21 students walk, drive, or take the bus to school.
what are 21 students?
100
Shelia did a study on whether 21 students walk, drive, or take the bus to school.
what is method of transportation (categorical-not binary)
100
The approximate shape of this graph.
what is symmetric?
100
What the long-run proportion of rolling a "2" on a fair six-sided die should be.
What is 1/6 (or 0.1667) (or 16.67%)?
200
the step represented by the following: "Based on our survey results, the average daily social media usage is 2.5 hours, with a slight variation across demographics. However, the sample size might not fully represent the general population, so further research with a larger sample could provide more robust conclusions."
what is step six: look back and ahead?
200
Are men or women more likely to put the cart back after getting groceries?
what are men and women?
200
How old are children when they lose their first baby tooth?
what is age (quantitative)?
200
In a right-skewed graph, the tail points in this direction.
what is to the right?
200
As a random process repeats more and more times, the long-run proportion becomes a better estimate of this.
what is the true proportion?
300
Give an example of a good research question you could ask about students at USU.
good job!
ex. do nursing majors have higher GPAs than other majors at USU.
300
Walter studied a random sample of 400 penguins in the North Pole and their swimming habits to determine if emperor penguins swim more than other penguins.
What are 400 penguins in the North Pole?
300
Chloe studied the eating habits of 19 betta fish, interested in the time of day (morning, afternoon, night) they ate.
what is time of day (categorical-not binary)
300
Approximately this percentage of observations fall within 2 standard deviations of the mean.
what is 95%
300
a regular 6-sided die with a one and a two representing one outcome and a three, four, five, and six representing another, represents this proportion.
what is 1/3 (or 0.33) (or 33.33%) (or 2/3) (or 0.66) (or 66.66%)?
400
This step of a statistical investiation involves summarizing the data using means, proportions, etc., and creating graphs
What is step 3: Explore the data?
400
Do true aggies that go to recitation have higher GPAs than those that don't?
what are true aggies?
400
Are men with brown or blonde hair more likely to grow a beard?
What is hair color (categorical-binary) AND whether/not they grow a beard (categorical-binary)
400
The mean of this graph.
what is 2?
400
true or false: outliers are a good indication of the overall behavior of your data.
what is a false?
500
Identify one possible limitation in the following study: Brittney works at a veterinary clinic and is interested in the proportion of dogs named "spot". One day, she writes down all the names of dogs in her clinic and computes the proportion of dogs named "spot" is 0.14. She concludes that this is the proportion of all dogs named "spot".
what is... answers will vary
500
Are studies conducted on green apples in Utah more likely to produce statistically significant results than in the rest of the US?
What are studies conducted on green apples?
500
Is the favorite color of monkeys associated with age?
what is favorite color (categorical-not binary) and age (quantitative)
500
The graph with a larger standard deviation (A or C).
What is C?
500
This man tossed a coin 10,000 times to estimate the probability of getting heads, obtaining a long run proportion of 0.5067.
who is John Kerrich?