actual value - predicted value
What is the residual?
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 one-sample T-test (or T procedure)?
To calculate, subtract the mean of the distribution from the observed x value, then divide by the standard deviation.
What is the z-score
This type of bias can occur when some members of a population cannot be included or are purposefully left out of a sample.
What is undercoverage?
The formula to calculate the one-sample z statistic.
What is z = (x-mean) / (S.D.)
"__________ percent of the variation in (response variable) can be accounted for by the least squares regression line."
What is the coefficient of determination (or r squared)?
The condition unique to this type of test is that all expected counts must be greater than 5.
What is the chi-squared tests? (goodness of fit, independence, or homogeneity tests)
True or false
Correlation is the same as causation
False.
Correlation does not imply causation
By randomly assigning treatments within an experiment we hope to reduce this within our data.
What is bias?
The condition involving the population size that must be satisfied to calculate the standard deviation of a sampling distribution.
What is "The 10% condition"
DOUBLE JEOPARDY
All three conditions to be verified for inference about a proportion.
What are the population size be greater than or equal to 10n
n times p hat & n times (1 - p hat) be greater than or equal to 10
Data is collected randomly
This calculator command can be used to find the area under a normal distribution for a given interval.
What is normalcdf?
A linear regression model is appropriate to use if this type of plot shows no leftover pattern.
What is a residual plot
This type of variable may influence either the response or explanatory variable, usually in a way that negatively impacts our results.
What is a confounding variable?
If the probability of occurrence of an event A is not affected by the occurrence of another event B, then A and B are said to be ______________
What is "Independent"?
What is ______________