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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 population from the observed x, then divide by the standard deviation of the observed x..
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
randInt(1,9,3)
What is the calculator command for generating 3 random numbers from 1 to 9?
200
The probability that one event happens given that another event is already known.
What is a conditional probability?
200
The formula to calculate the one-sample z statistic.
What is z = (statistic - parameter)/standard deviation of statistic?
300
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 (aka empirical rule)?
300
The fraction of the variables in the values of y that is explained by the LSRL of y onto x.
What is the coefficient of determination (or r squared)?
300
This occurs when 2 variables are associated in such a way that their effects on a response variable cannot be distinguished from each other.
What is confounding?
300
Events that have no outcomes in common and can never occur simultaneously, for which the addition rule is used.
What are mutually exclusive (or disjoint events)?
300
The conditions to use this test include: 1. Data must come from a random sample 2. When sampling without replacement, check the 10% condition 3. All expected counts be greater than 5.
What is the goodness of fit (or 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
3 of the 4 basic principles of experimental design.
What are Comparison, Randomize, Control, and Replicate?
400
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 10% Rule (the population is at least 10 times the sample size)?
400
2 of the 3 conditions to be verified for inference about a proportion.
What are any 2 of these: 1) 10% Rule 2) Large Counts 3) SRS
500
This calculator command can be used to find the area under a normal distribution and above an interval.
What is normalcdf?
500
In transforming data to achieve linearity, how can you tell the difference between between a exponential model and a power model?
What is an exponential model transforms only the response variable (takes log of) while power model transform both the explanatory and response variables (takes the log of both)?
500
A group of experimental units that are known before the experiment to be similar in some way that is expected to affect the response to the treatments.
What is a block?
500
This type of setting arises when we perform independent trials of the same chance process and record the number of trials it takes to get one success.
What is a geometric setting?
500
b +/- t*SE sub b
What is the confidence interval for slope (beta) of a true regression line?