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?
The basic rules of probability
What are P(A) must be between 0 and 1, P(S) = 1, P(A) = #success/#outcomes, Addition Rule and Complement Rule?
These are 3 main “good” sampling methods
What are Simple Random Sample, Stratified Random Sample, and Cluster Sample?
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 two parts of a probability model
What are sample space and probability of each outcome?
If an experiment favors a characteristic that we know might bias the results, as statisticians we will then do this to take that characteristic into account.
What is Random Block Design?
This rule helps to determine if data is normally distributed by checking the number of standard deviations within each interval.
What is the 68-95-99.7 rule?
The percentage of the variation in y explained by the LSRL using x.
What is the coefficient of determination (or r squared)?
Sample where individuals are different within but similar between
What is Cluster Sample?
Events that have no outcomes in common and can never occur simultaneously, for which the addition rule is used.
What are mutually exclusive events?
if the occurrence of one event does not change the probability that the other event will happen, then they are called this
What are independent events?
The square of the standard deviation.
What is the variance?
Using a regression model to make a prediction outside of the domain of the explanatory variable
What is extrapolation?
The 3 basic principles of experimental design.
What are control, random assignment, and replication?
This is how you prove events A and B are independent
What is P(A) = P(A l B)?
The 5 number summary AND what it is used for
What are min, Q1, Median, Q3, Max AND used for Box Plots
This calculator command can be used to find the area under a normal distribution and above an interval.
What is normalcdf?
Acronym to describe the relationship between two quantitative variables.
What is D.U.F.S.?
The steps to perform a simulation.
What are state/describe the problem, define digits, simulate repetitions, and state the conclusion?
Choosing one card from a deck of cards.
P(Ace or Heart)
16/52 = 4/13
The balance point of the density curve
What is the mean?