This rule is used to identify the outliers in a distribution.
What is the 1.5 x IQR rule?
100
The group of all individuals that we want information about
What is the population?
100
This phrase is used to describe an experiment where neither the subjects nor those who interact with them and measure the response variable know which treatment a subject received.
What is double-blind?
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
In order to do this you must remember your "socs"!
What is describe a distribution?
200
Statistical studies often try to show what happens when changes occur on this variable
What is the explanatory variable?
200
A common type of randomized block design for comparing two treatments
What is a matched pairs design?
200
The type of variable where the probability distribution assigns probability as the area under the density curve above a specific interval.
What is a continuous random variable?
200
The formula to calculate the one-sample z statistic.
What is z = (x bar minus mu sub o) divided by (sigma divided by the square root of n) ?
300
Both of these are good descriptors for roughly symmetric distributions without outliers.
What are the mean and standard deviation?
300
This sample consists of people who choose themselves by responding to a general invitation
What is a voluntary response sample?
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 test 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 goodness of fit (or chi-square) test?
400
This measure of center is greatly affected by skewness or outliers.
What is the mean?
400
To do this, you start by classifying the population into groups of similar individuals - then choose a separate SRS in each group and combine these to collect the data.
What is set up a stratified random sample?
400
When data is produced to answer specific questions about individuals as they are.
What is an observational study?
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 '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 could also be one of the two)
500
This calculator command can be used to find the area under a normal distribution and above 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
The five steps of a simulation.
What are state/describe the problem, state assumptions, assign digits, simulate repetition, and state the conclusion?
500
The formula to determine the variance for a discrete random variable with three possible values.
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
b +/- t*SE sub b
What is the confidence interval for slope beta of a true regression line?