This measure of center and spread describes a normal distribution
What is the mean and standard deviation?
100
observed y - predicted y
What is the residual?
100
The only type of study that can conclude cause and effect.
What is an experiment?
100
This type of random variable requires a fixed number of trials. A typical question is phrased as "What is the probability of getting x out of n?"
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
This sampling method requires that the population be separated into groups and then all the data in just a few random groups are measured.
What is cluster sampling?
200
All the probabilities in a discrete probability distribution should do this.
What is add to a sum of 1?
200
The formula to calculate the standard deviation the sampling distribution of an average of 10 items.
What is sigma divided by the square root of 10?
300
This is the percent of values of a normal distribution that is within two standard deviations of the mean.
What is 95%?
300
The percent of the variation in the values of y that is explained by the LSR of y on x.
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.
What is block design?
300
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)?
300
The conditions to use this type of test include that the expected counts be more 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 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 and ensure independence.
What is 'the population is at least 10 times the sample size'?
400
Two of the conditions to be verified for inference about 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 or random assignment could also be one of the two)
500
This calculator command can be used to find the z score for a given percentile.
What is invNorm?
500
These are 4 different measures of spread.
What are range, IQR, standard deviation, and variance?
500
This type of variable can confuse the results of a study if it's not clear whether it or the explanatory variable is the reason for the change observed.
What is a confounding variable?
500
P(A|B) is known as this
What is the probability of A given B?
500
This is the state of being so unlikely to happen by chance alone.