Categorical Data
Quantitative Data
Normal Models
Bivariate Data
Collecting Data
Probability
100
The name for data like gender, political affiliation, race, or religion, which do not include numbers.
What are categorical data?
100
The four things that you describe about and univariate graph.
What are shape, center, spread, and outliers?
100
The conditions for data to be considered normally distributed.
What are unimodal and symmetric?
100
A graph that shifts the line of best fit to lie on the x-axis and plots the differences between the model and the data vs. the explanatory variable. If you see a pattern, change your model.
What is a residual plot?
100
A method of sampling where people get to choose whether to participate.
What is a voluntary sample?
100
There's a 98% chance of snow today or tomorrow. What are the chances that it doesn't snow at all?
What is 2%
200
The three rules of statistics.
What are draw a picture, draw a picture, draw a picture?
200
The measures of center and spread which resist outliers
What are median and IQR?
200
The percent of data between 1 standard deviation below and 1 standard deviation above the mean.
What is 68%?
200
The slope of a graph of data with standard deviation in x of 0.5, standard deviation in y of 2, and a correlation coefficient of -0.7.
What is -2.8?
200
An example of double blinding.
What is an experiment where neither the experimental unit nor the experimenter knows the treatment?
200
An urn contains 6 red marbles and 4 black marbles. Two marbles are drawn with replacement from the urn. What is the probability that both of the marbles are black?
What is 0.16?
300
The name for the totals column and row of a contingency table.
What are marginal distributions?
300
The way of changing data which only affects measures of center, not measures of spread.
What is a shift (adding or subtracting)?
300
The height a student would need to be to have a standardized score of 2, if mean is 5'6 and standard deviation is 3 inches.
What is 6 foot?
300
The correlation coefficient for a graph of with a line of best fit which explains 64% of variation in the gas in a car with variation in miles driven by the car?
What is -.80?
300
The confounding variable if a new drug is tested by giving a placebo to a man and the drug to a woman.
What is gender?
300
Bob is a high school basketball player. He is a 70% free throw shooter. That means his probability of making a free throw is 0.70. What is the probability that Bob makes his first free throw on his fifth shot?
What is 0.0057?
400
The greater of the two: percent of males who like golden retrievers and the percent of people who like golden retrievers who are males.
What is 33/91>33/275?
400
The percent of driver deaths that were above the oldest cyclist death.
What is 25%?
400
The percent of people taller than 6 foot if average height is 5'10 and standard deviation in height is 3 inches.
What is 25.2%? (normcdf 72, 1E99, 70, 3)
400
The real cost of a 500 mile airline ticket if price can be predicted using the formula predicted price = 125 + 1.75*miles but the real price has a residual of -120
What is $850?
400
An example of a lurking variable.
Why do shark attacks and ice cream sales both increase at the same time (summer)?
400
There's a 70% chance of snow on each day for the next three days. What are the chances that it snows on at least one of the days?
What is 97.3%?
500
A method for checking whether dog preference depends on gender.
What is checking a conditional distribution against a marginal distribution?
500
The age that a cyclist would have to die at to be considered an outlier?
What is about 90 years? (Q3+1.5IQR)
500
The mean and standard deviation of battery life if 97.5% of batteries last longer than 5 hours and 84% of batteries last longer than 8 hours?
What are a mean of 11 hours and a standard deviation of 3 hrs?
500
The meaning of a r2 value of 90% between height and foot size.
What is 90% of variation in foot size can be explained by variation in height?
500
An experimental diagram with blocking and 3 levels of treatments making 6 treatment groups.
What is a tree diagram with a two split then three splits?
500
A correctly drawn venn diagram for this situation: 23% of students were late today. 20% of students live in Eagle. 63% of students weren't late and don't live in Eagle.
What is 6% overlap, 17% in one circle, 14% in another, 63% on the outside?