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Sampling
Inference
Probability
Data Analysis
Random
100
A subset of a statistical population in which each member of the subset and each grouping of the subset has an equal probability of being chosen
What is Simple Random Sample
100
An interval of values that captures the population mean with a certain level of confidence
What is confidence interval
100
If individual outcomes are uncertain but there is none the less a regular distribution of outcomes in a large number of repetitions
What is randomness
100
Area under a density curve
What is 1
100
probability of correctly rejecting the null when the alternative hypothesis is true
What is power
200
A survey conducted on the full set of observation objects belonging to a given population or universe
What is census
200
N>10n
What is independence condition
200
P(A) + P(A') = 1
What is complement rule
200
a diagram in which the numerical values of variables are represented by the height or length of lines or rectangles of equal width
What is bar graph
200
Never forget your _______?!!!!
What is Socs
300
The arranging of experimental units in groups that are similar to one another
What is blocking
300
Confidence test used when there are multiple categorical variables
What is chi-squared
300
A person being pregnant and being a man
What is mutually exclusive
300
In any distribution the percent of observations falling within k standard deviations is at least 100(1-(1/k^2))
What is Chebyshev's inequality
300
Neither the subjects nor those who measured the experiment know which treatment the subjects received
What is double blind experiment
400
Finding a sample proportion of males vs females who enter a certain store is an example of a _____________ study
What is Observational
400
For each value of X, the probability distribution of Y has the same standard deviation σ. When this condition is satisfied, the variability of the residuals will be relatively constant across all values of X, which is easily checked in a residual plot
What is linear regression condition
400
P(A & B) / P(A)
What is P(B|A)
400
X axis equals time
What is a timeplot
400
When an inference procedure is still fairly accurate of one of the inference conditions is violated
What is robust
500
Call in opinion polls are an example of ________
What is voluntary response sampling
500
Formula for calculating the degrees of freedom of two sample t-test
What is DF = (s1^2/n1 + s2^2/n2)^2 / { [ (s1^2 / n1)^2 / (n1 - 1) ] + [ (s2^2 / n2)^2 / (n2 - 1) ] }
500
P(A) + P(B)- P(A & B)
What is P(A or B)
500
a number between −1 and +1 calculated so as to represent the linear dependence of two variables or sets of data
What is correlation coefficient or r
500
when the null is true and you reject it
What is type 1 error