Exam (elaborations)
QMB 3200 Questions And Answers Latest Update
- Course
- QMB 3200
- Institution
- University Of Central Florida
QMB 3200 Questions And Answers Latest Update
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Solution 2024/2025Pepper
QMB 3200 Questions And Answers Latest Update
Describes a model with a few number of terms ANS✔✔ Parsimonious model
True slope of line in simple linear regression ANS✔✔ Beta1
A large sample ANS✔✔ N greater than 30
# of dumy variables required to represent a QL var at 3 levels ANS✔✔ 2
Computer software used to generate your project printout ANS✔✔ Statistix 9.0
ANOVA ANS✔✔ Analysis of Variance
When 2 or more Independent variable are highly correlated ANS✔✔ What is multicollinearty
The coefficient of determination ANS✔✔ R^2
The tester's choice, usually .05 ANS✔✔ Alpha
A measure of central tendency in the population ANS✔✔ Mew
The value of R2 in simple linear regression when x and y are uncorrelated ANS✔✔ 0
Squared or not, it measures dispersion in the population ANS✔✔ Sigma (SD)
, Solution 2024/2025
Pepper
Decision made about Ho when alpha exceeds the p-value ANS✔✔ Reject Ho
A type II error ANS✔✔ Accepting Ho when Ho is false
Rejecting Ho when Ho is true ANS✔✔ Type I error
In theory, the proportion of 90% CI's for mean that capture the true mean ANS✔✔ 90%
Unobservable regression error ANS✔✔ Epsilon -error
# of treatements in ANOVA with 2 factors SEX (M,F) & race (W, NW) ANS✔✔ 4
Describes a model with a squared term (x2) ANS✔✔ Second order model or quadratic model
Sum of squared errors ANS✔✔ SSE
E(y) ANS✔✔ the mean (or, expected value of y)
The null hypothesis for the global F test in regression ANS✔✔ Ho: beta 1= beta 2= beta k=0
A p-value which supports Ha when alpha=.02 ANS✔✔ .002
when the relationship between y and x1 depends on x2 ANS✔✔ interaction
the object upon which measurements are taken ANS✔✔ experimental unit
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