Applied Statistics Ma 320 exam 1 fully solved

Applied Statistics Ma 320 exam 1confounding variable - correct answer In statistics, a confounding variable is a variable that influences both the dependent (response) variable and independent (predictor) variable. hypothesis - correct answer An idea that is suggested as an explanation for something, but that has not yet been proved to be true. What is the science of modeling uncertainty? - correct answer probability variance - correct answer The amount by which two or more things are different or by which they change. standard deviation - correct answer A number in statistics that shows by how much members of a mathematical set can be different from the average set. correlation - correct answer A measure of the extent to which two factors vary together, and thus of how well either factor predicts the other. How can the probability of an event be estimated? - correct answer proportion of the event that occurs in a long series of repetitions covariate - correct answer Similar to an independent (predictor) variable, a covariate is complementary to the dependent (response) variable. A variable is a covariate if it is related to the dependent (response) variable. What is obtained by measuring variable of individuals of interests? - correct answer data vector - correct answer A quantity that has magnitude and direction