Time Series
What is the term for "error in the forecast for time t"
E t (error)
What model do you use when you have a relationship between predictor variables and a categorical response variable.
Logistic Regression
what term is the default or “status quo” hypothesis
Null hypothesis, or H0
what term means the person includes all members of the group we want to study
population
What kind of samples are drawn at random from two populations
Independent Samples
What is the term for "the variable of interest"
Y
when this value is positive; it means that as X increases; the log odds increase; so the probability of being in the yes class increases
coefficient of a numerical variable
what term is the hypothesis that the analysis evaluates
Alternative hypothesis, or Ha
When the person is taking the subset of the population that we actually study, often selected randomly it is called
sample
What kind of sample occurs when members are matched to be as similar as possible except for a treatment, and when before-and-after treatment measurements are compared within individual.
Paired Sample
What is the term for "observed value of Y at time t"
Y t
What function that implies that the coefficients of the regression are in log odds units
logit function
What type of error occurs when you reject a null hypothesis that is true
What is the middle value when the data are sorted by value
median
Tread wear on two different tire types. Both tire types are mounted to the same car. What type of sample is this?
Paired
what model uses a level and trend parameter to smooth a time series. appropriate for series with a trend but no seasonality
Holt's Method
when this value is greater than one; it means that when X increases; the odds increase; so the probability of being in the yes class increases
Exp(coeff) of a numerical variable
What type of error occurs when you fail to reject a null hypothesis that is false
Type 2 error
What is the term means measuring the dispersion of a numerical variable as the difference between the maximum and minimum observations
Range
Risk tolerance of a sample of (the same) fund managers measured before and after a stock market crash. What type of sample is this?
paired
What model uses a level; trend; and seasonality parameter to smooth a series. appropriate for a series with seasonality (and possibly trend)
Winter's Method
What term means "to use data from explanatory variables to classify observations into one of two known categories".
goal of binary logistic regression
What term §determines how strong the evidence in favor of the alternative hypothesis must be to reject the null hypothesis
significance level (LOS)
what is the square root of the population or sample variance
Standard Deviation
The life expectancy of light bulbs made in 2 different factories. What type of sample is this?
Independent