Organizing Data
This measure of center is more resistant to outliers than the mean.
What is the median?
observed y - predicted y
What is the residual?
This phrase is used to describe an observed effect so large that it would rarely occur by chance.
What is statistically significant?
This type of random variable requires a fixed number of trials.
What is a binomial random variable?
Neither the subject nor those who measure the response variable know which treatment a subject received.
What is a double-blind experiment?
To calculate, subtract the mean of the distribution from the observed x, then divide by the standard deviation.
What is the z-score (or standardized value)?
Measures the direction and strength of a linear relationship between two quantitative variables.
What is correlation (or r)?
randInt(1,9,3)
What is the calculator command for generating 3 random numbers from 1 to 9?
The type of variable where the probability distribution assigns probability as the area under the density curve above a specific interval.
What is a continuous random variable?
A common form of blocking for comparing just two treatments.
What is matched pairs?
This rule helps to determine if data is normally distributed by checking the number of observations within each interval.
What is the 68-95-99.7 rule?
The fraction of the variables in the values of y that is explained by the LSR of y on x.
What is the coefficient of determination (or r squared)?
This experimental design involves the random assignment of units to treatments which are carried out separately within each group of units known to be similar in some way that is expected to affect the responses.
What is block design?
Events that have no outcomes in common and can never occur simultaneously, for which the addition rule is used.
What are disjoint events (or mutually exclusive events)?
When some groups in the population are left out of the process of choosing a sample
What is undercoverage?
The square of the standard deviation.
What is the variance?
Applying a logarithmic transformation to both variables causes this type of model to become linear.
What is a power model?
The 3 basic principles of experimental design.
What are control, randomize, and replicate?
The condition involving the population size that must be satisfied to use sigma divided by the square root of n as the standard deviation of a sampling distribution.
What is 'the population is at least 10 times the sample size'?
The population is divided into groups. Some groups are randomly selected and all individuals in the chosen groups are sampled.
What is cluster sampling?
This calculator command can be used to find the area under a normal distribution and above an interval.
What is normalcdf?
Refers to the reversal of the direction of a comparison or an association when data from several groups are combined to form a single group.
What is Simpson's Paradox?
The five steps of a simulation.
What are state/describe the problem, state assumptions, assign digits, simulate repetition, and state the conclusion?
The best AP Statistics teacher.
Who is Mr. Resnikoff?
The effects of two variables on the response cannot be distinguished from each other.
What is confounding?