ECO 391 Final Exam UKY | Actual study |
Questions and Answers
confidence coefficient - ANSW-The confidence level expressed as a decimal value. For example, .95 is the
confidence coefficient for a 95% confidence level.
confidence interval - ANSW-a range of values so defined that there is a specified probability that the
value of a parameter lies within it.
confidence level - ANSW-the estimated probability that a population parameter lies within a given
confidence interval
degrees of freedom - ANSW-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 - ANSW-an estimate of a parameter that takes the form of an interval
level of significance - ANSW-the probability of rejecting the null hypothesis when it is true
margin of error - ANSW-the range of percentage points in which the sample accurately reflects the
population
t distribution - ANSW-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 - ANSW-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 - ANSW-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 - ANSW-a probability distribution where each outcome belongs to
one of three or more categories
test of independence - ANSW-A method of assessing whether two categorical variables are associated or
dependent.
ANOVA table - ANSW-the analysis of variance table used to summarize the computations associated with
the F test for significance
coefficient of determination - ANSW-a measure of the amount of variation in the dependent variable
about its mean that is explained by the regression equation
correlation coefficient - ANSW-a statistical measure of the extent to which two factors vary together, and
thus of how well either factor predicts the other
dependent variable - ANSW-The measurable effect, outcome, or response in which the research is
interested.
estimated regression equation - ANSW-The estimate of the regression equation developed from sample
data by using the least squares method.
high leverage points - ANSW-observations with extreme values for the independent variables
independent variable - ANSW-The experimental factor that is manipulated; the variable whose effect is
being studied.
Questions and Answers
confidence coefficient - ANSW-The confidence level expressed as a decimal value. For example, .95 is the
confidence coefficient for a 95% confidence level.
confidence interval - ANSW-a range of values so defined that there is a specified probability that the
value of a parameter lies within it.
confidence level - ANSW-the estimated probability that a population parameter lies within a given
confidence interval
degrees of freedom - ANSW-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 - ANSW-an estimate of a parameter that takes the form of an interval
level of significance - ANSW-the probability of rejecting the null hypothesis when it is true
margin of error - ANSW-the range of percentage points in which the sample accurately reflects the
population
t distribution - ANSW-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 - ANSW-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 - ANSW-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 - ANSW-a probability distribution where each outcome belongs to
one of three or more categories
test of independence - ANSW-A method of assessing whether two categorical variables are associated or
dependent.
ANOVA table - ANSW-the analysis of variance table used to summarize the computations associated with
the F test for significance
coefficient of determination - ANSW-a measure of the amount of variation in the dependent variable
about its mean that is explained by the regression equation
correlation coefficient - ANSW-a statistical measure of the extent to which two factors vary together, and
thus of how well either factor predicts the other
dependent variable - ANSW-The measurable effect, outcome, or response in which the research is
interested.
estimated regression equation - ANSW-The estimate of the regression equation developed from sample
data by using the least squares method.
high leverage points - ANSW-observations with extreme values for the independent variables
independent variable - ANSW-The experimental factor that is manipulated; the variable whose effect is
being studied.
