This measure of center is resistant to the effect of outliers.
What is the median?
100
Observed y - Predicted y
What is the residual?
100
This phrase is used to describe an observed statistic so extreme 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?
200
To calculate this value, 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
randInt(1,9,3)
What is the calculator command for generating 3 random numbers from 1 to 9?
200
Two possible outcomes, probability of success remains constant, and the trials are independent.
What are Bernoulli trials?
200
The change in sample size required to cut the margin of error to one-fourth of its original size for a confidence interval?
What is "multiply original sample size by 16??
300
For normally distributed distributions, this rule specifies the percentage of observations that fall within 1, 2, and 3 SD's from the mean.
What is the 68-95-99.7 rule?
300
The fraction of the variation in y that can be explained by the least-squares regression line relating y to 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 a randomized block design?
300
Events that have no outcomes in common and can never occur simultaneously.
What are disjoint events (or mutually exclusive events)?
300
A test of significance to determine if the distribution of a single categorical variable is the same across multiple groups.
What is the chi-square test of homogeneity?
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, randomization, and replication?
400
The condition that requires at least 10 successes and 10 failures in one or both samples when evaluating proportions.
What is the Nearly Normal condition?
400
The degrees of freedom for a macthed pairs t-test?
What is the number of differences or pairs minus 1 (or n sub-d - 1)?
500
This calculator command can be used to find the area under a normal distribution.
What is normalcdf?
500
Refers to a paradox in which a trend that appears in different groups of data disappears when these groups are combined, and the reverse trend appears for the aggregate data.
What is Simpson's Paradox?
500
A statistical technique used to emulate real-world chance behavior in order to estimate a theoretical value.
What is simulation?
500
The new IQR after multiplying all values in a dataset by 4, and then subtracting 2 from each value.
What is 4 times the original IQR?
500
The degree of variability in regression slope estimates in repeated sampling?
What is the standard error of beta-1 (or SE(b sub-1))?