FINAL Flashcards
(24 cards)
descriptive summary (mean, median, etc) of a dataset that indicates the middle or where the data tends to cluster
Central Tendency
Process of defining an abstract concept that will be tested
Operationalize
Difference b/w sample statistic and a population parameter
Sampling Error
Situation where the variability of residuals is not constant across all levels of the independent variable
Heteroscadasisity
The point where a regression line crosses the vertical axis
Y intercept
measure of central tendency calculated by taking the nth root of the product of n values
Geometric Mean
The Bernoulli Process basic variable is dichotomous and probabilities are independent
Binomial
Probability of an event occuring based on the assumption that all the outcomes are equally likely “priori”
Classical Probability
statistical estimation of the range within which the true population parameter is expected to fall
Margin of Error
Probability measure used in hypothesis testing to help determine the strength of evidence against the null hypothesis
P Value
Process of rescaling a variable “x” to a z-scale, allowing comparisons between different variables have different values
Standardizing
A statistical technique used to model the relationship between one dependent variable and multiple independent variables
Multiple Linear Regression
In ANOVA, refers to the specific values within an independent variable that are being compared
Level
Principle used in linear regression to estimate best fitting line by minimizing the sum of squared residuals
Ordinary Least Squares
In ANOVA, independent variable that is being tested to determine its effect on dependent variable
Factor
A type of quantitative variable that ordered catergories with meaningful intervals in between themP
Ratio Variable
Measure of likelihood or chance that a particular event will occur. Quantifies uncertainty between 1 & 0.
Probability
Concept (often abstract) or variable that must be defied for research (i.e. stress, intelligence, etc)
Theoretical Construct
Numerical characteristic that describes an aspect of a population
Parameter
Named after a Swiss mathematician, this describes an experiment of independent, dichotomous events. Such an experiment can be modeled using binomial probabilities
Bernoulli Process
A probability based on observation and
frequency of occurrence in the past
Empirical probability
probability will have to be based on whatever
evidence is available.
Subjective Probability
A level of measurement characterized by ordered categories and equal
space between consecutive values. This level has no true zero point.
Interval
A statistical method used to model a straight-line relationship between
two continuous variables, X and Y.
Simple Linear Regression
