What is a binary variable?A dichotomous variable, one that can assume only two values.

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What are common logarithms?Base-10 logs

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What is a likelihood function?A number that summarizes how well a model's predictions fit the observed data.

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What is logged likelihood?The natural log of likelihood. MLE models generally maximize the sum of logged likelihoods rather the product of probabilities for computational reasons.

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What is logistic regression?a nonlinear regression model that relates a set of explanatory variables to a dichotomous dependent variable
What is a logistic regression coefficient?a multiple regression coefficient based on the logistic model
What are logits?A shorthand reference for natural log transformations of odds.

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What is maximum likelihood estimation?The parameter that is most consistent with the observed data. In other words, the observed data has a greater chance of occurring when the parameter equals the maximum likelihood estimate compared to the parameter equaling any other number.

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What are natural logarithms?Base-e logarithms; base e is approximately equal to 2.72.

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What are odds?the ratio of the frequency of one event to the frequency of a second event

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What is an odds ratio?a measure of association between two dichotomous variables in which the odds of having a trait or property in one group are divided by the corresponding odds of the other group

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What is a percentage change in the odds?Expressing the change in odds (as a result of a unit change in some explanatory variable) as a percentage.

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What is a probability profile?Identifies the change in the probability of an event occurring from a change in the value of independent variables.

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What are sample averages?Researchers generally estimate the effect of a change in the value of an independent variable on the probability of an event occurring for an observation with sample averages of other explanatory variables.

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