ECO 391 Final Exam UKY questions
and answers 2025/2026
confidence coefficient - correct answer ✔✔The confidence level expressed as a decimal value.
For example, .95 is the confidence coefficient for a 95% confidence level.
confidence interval - correct answer ✔✔a range of values so defined that there is a specified
probability that the value of a parameter lies within it.
confidence level - correct answer ✔✔the estimated probability that a population parameter lies
within a given confidence interval
degrees of freedom - correct answer ✔✔The number of individual scores that can vary without
changing the sample mean. Statistically written as 'N-1' where N represents the number of
subjects.
interval estimate - correct answer ✔✔an estimate of a parameter that takes the form of an
interval
level of significance - correct answer ✔✔the probability of rejecting the null hypothesis when it
is true
margin of error - correct answer ✔✔the range of percentage points in which the sample
accurately reflects the population
t distribution - correct answer ✔✔A distribution specified by degrees of freedom used to model
test statistics for the sample mean, differences between sample means, etc. where IT (' s) is
(are) unknown
, goodness of fit test - correct answer ✔✔A statistical test of the hypothesis that data have been
randomly sampled or generated from a population that follows a particular theoretical
distribution or model. The most common such tests are chi-square tests.
Marascuilo procedure - correct answer ✔✔A multiple comparison procedure that can be used
to test for a significant difference between pairs of population proportions. This test can be
helpful in identifying differences between pairs of population proportions whenever the
hypothesis of equal population proportions has been rejected.
multinomial probability distribution - correct answer ✔✔a probability distribution where each
outcome belongs to one of three or more categories
test of independence - correct answer ✔✔A method of assessing whether two categorical
variables are associated or dependent.
ANOVA table - correct answer ✔✔the analysis of variance table used to summarize the
computations associated with the F test for significance
coefficient of determination - correct answer ✔✔a measure of the amount of variation in the
dependent variable about its mean that is explained by the regression equation
correlation coefficient - correct answer ✔✔a statistical measure of the extent to which two
factors vary together, and thus of how well either factor predicts the other
dependent variable - correct answer ✔✔The measurable effect, outcome, or response in which
the research is interested.
estimated regression equation - correct answer ✔✔The estimate of the regression equation
developed from sample data by using the least squares method.
and answers 2025/2026
confidence coefficient - correct answer ✔✔The confidence level expressed as a decimal value.
For example, .95 is the confidence coefficient for a 95% confidence level.
confidence interval - correct answer ✔✔a range of values so defined that there is a specified
probability that the value of a parameter lies within it.
confidence level - correct answer ✔✔the estimated probability that a population parameter lies
within a given confidence interval
degrees of freedom - correct answer ✔✔The number of individual scores that can vary without
changing the sample mean. Statistically written as 'N-1' where N represents the number of
subjects.
interval estimate - correct answer ✔✔an estimate of a parameter that takes the form of an
interval
level of significance - correct answer ✔✔the probability of rejecting the null hypothesis when it
is true
margin of error - correct answer ✔✔the range of percentage points in which the sample
accurately reflects the population
t distribution - correct answer ✔✔A distribution specified by degrees of freedom used to model
test statistics for the sample mean, differences between sample means, etc. where IT (' s) is
(are) unknown
, goodness of fit test - correct answer ✔✔A statistical test of the hypothesis that data have been
randomly sampled or generated from a population that follows a particular theoretical
distribution or model. The most common such tests are chi-square tests.
Marascuilo procedure - correct answer ✔✔A multiple comparison procedure that can be used
to test for a significant difference between pairs of population proportions. This test can be
helpful in identifying differences between pairs of population proportions whenever the
hypothesis of equal population proportions has been rejected.
multinomial probability distribution - correct answer ✔✔a probability distribution where each
outcome belongs to one of three or more categories
test of independence - correct answer ✔✔A method of assessing whether two categorical
variables are associated or dependent.
ANOVA table - correct answer ✔✔the analysis of variance table used to summarize the
computations associated with the F test for significance
coefficient of determination - correct answer ✔✔a measure of the amount of variation in the
dependent variable about its mean that is explained by the regression equation
correlation coefficient - correct answer ✔✔a statistical measure of the extent to which two
factors vary together, and thus of how well either factor predicts the other
dependent variable - correct answer ✔✔The measurable effect, outcome, or response in which
the research is interested.
estimated regression equation - correct answer ✔✔The estimate of the regression equation
developed from sample data by using the least squares method.
