
ecn1
Authored by Uchral Ganzorig
Education
University
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62 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the coefficient of determination is 95%, then:
95% of the variation in the independent variable is explained by the dependent variable.
95% of the time, the confidence interval is a good estimate.
the regression equation is 95% correct.
95% of the variation in the dependent variable is explained by the independent variable.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following statements is true for a multiple regression equation?
There is only one dependent variable.
There is only one (Y – Ŷ).
All the regression coefficients must be between -1.00 and 1.00.
The R2 term must be at least .50.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Регрессийн загварын хувьд регрессийн квадратуудын нийлбэрийг аль томьёогоор олох вэ?
∑(ŷi - ȳ)2
∑(ŷi - yi)2
∑(yi - ȳ)2
∑(ȳ - yi)2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
∑(yi−y̅)2 гэж тооцоологдох квадратуудын нийлбэр нь регрессийн загварын хувьд дараахаас аль нийлбэрийн томьёо вэ?
Үлдэгдлийн квадратуудын нийлбэр
зөв хариу алга
Регрессийн квадратуудын нийлбэр
Бүтэн квадратуудын нийлбэр
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Yi=B0+B1·Xi регрессийн тэгшитгэлийн B1 коэффициент ямар утгатай вэ?
Yi нь нэг нэгжээр өөрчлөгдөхөд Xi нь B1 хэмжээгээр нэмэгдэхийг
Xi нь нэг нэгжээр өөрчлөгдөхөд Yi нь B0 хэмжээгээр нэмэгдэхийг
Yi нь нэг нэгжээр өөрчлөгдөхөд Xi нь B0 хэмжээгээр нэмэгдэхийг
Xi нь нэг нэгжээр өөрчлөгдөхөд Yi нь B1 хэмжээгээр нэмэгдэхийг
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In order to test for the significance of a regression model involving 3 independent variables and 47 observations, the numerator and denominator degrees of freedom (respectively) for the critical value of F are:
2 and 43.
3 and 47.
3 and 43.
47 and 3.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Regression analysis was applied between demand for a product (y) and the price of the product (x), and the following estimated regression equation was obtained. ŷ =120−10xŷ=120−10x Based on the above estimated regression equation, if price is increased by 2 units, then demand is expected to
decrease by 20 units
increase by 20 units
increase by 120 units
decrease by 10 units
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