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Organizing Data
Data Relationships
Producing Data & Experiments
Probability & Distributions
Inference & Tests
100
This measure of center is more resistant to outliers than the mean.
What is the median?
100
observed y - predicted y
What is the residual?
100
This phrase is used to describe an observed effect so large that it would rarely occur by chance.
What is statistically significant?
100
This type of random variable requires a fixed number of trials.
What is a binomial random variable?
100
The type of significance test used for the mean of a single population when the standard deviation of the population is unknown.
What is a T test (or T procedure)?
200
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)?
200
Measures the direction and strength of a linear relationship between two quantitative variables.
What is correlation (or r)?
200
The calculator command for generating 3 random integers from 1 to 9.
What is randInt(1,9,3) ?
200
The type of variable where the probability distribution assigns probability as the area under the density curve within a specific horizontal interval. Hint: it's not a DISCRETE random variable
What is a continuous random variable?
200
The formula to calculate the test statistic for a 1-proportion z test.
What is z = (p hat minus p sub o) divided by (square root (p sub o times (1 minus p sub o) divided by n))?
300
This rule helps to determine if data are normally distributed by checking the number of observations within 1, 2 and 3 standard deviations of the mean.
What is the 68-95-99.7 rule?
300
The fraction of the variation in the values of y that is explained by the LSLR.
What is the coefficient of determination (or r squared)?
300
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. (In essence, you're running parallel experiments.)
What is block design?
300
Events that have no outcomes in common and can never occur simultaneously.
What are disjoint events (or mutually exclusive events)?
300
The conditions to use these kinds of tests include all expected counts be greater than or equal to 1 and no more than 20% of all the expected counts be less than 5.
What is the chi-square test?
400
The square of the standard deviation.
What is the variance?
400
Applying a logarithmic transformation to BOTH variables causes this type of model to become linear.
What is a power model?
400
The 3 basic principles of experimental design.
What are control, randomize, and replicate?
400
The mean of a sampling distribution of a mean and the mean of a sampling distribution of a proportion.
What are mu sub x bar and mu sub p hat?
400
Two of the three conditions to be verified for a confidence interval for a proportion.
What are the population size be greater than or equal to 10n and n times p hat & n times (1 - p hat) be greater than or equal to 10? (SRS could also be one of the two)
500
This calculator command can be used to find the area under a normal distribution and within an interval.
What is normalcdf?
500
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?
500
When surveying, the systematic over- or under-representation of one or more groups. (Hint: it's a short word!)
What is bias?
500
The formula to determine the variance for a discrete random variable with three possible values, x1, x2, and x3
What is sigma sub x squared = (the square of the difference between x sub 1 and mu multiplied by p sub 1) + (the square of the difference between x sub 2 and mu multiplied by p sub 2) + (the square of the difference between x sub 3 and mu multiplied by p sub 3) ?
500
The chance of getting a test statistic at least as extreme as the one given by YOUR sample, assuming the null hypothesis is true.
What is the P-value?