MCQ 11 Mark$b_{x y} \cdot b_{y x}=$ _________AvB$y _{ x }$✓$r ^2$D$\left(y_y\right)^2$AnswerCorrect option: C. $r ^2$$r ^2$View full question & answer→
MCQ 21 Mark‘r’ is ________ARegression coefficient of Y on XBRegression coefficient of X on Y✓Correlation coefficient between X and YDCovariance between X and YAnswerCorrect option: C. Correlation coefficient between X and YCorrelation coefficient between X and YView full question & answer→
MCQ 31 Mark$b_{y x}$ is ________✓Regression coefficient of Y on XBRegression coefficient of X on YCCorrelation coefficient between X and YDCovariance between X and YAnswerCorrect option: A. Regression coefficient of Y on XRegression coefficient of Y on XView full question & answer→
MCQ 41 Mark$b_{y x}$is ________ARegression coefficient of Y on X✓Regression coefficient of X on YCCorrelation coefficient between X and YDCovariance between X and YAnswerCorrect option: B. Regression coefficient of X on YRegression coefficient of X on YView full question & answer→
MCQ 51 MarkIn the regression equation of X on YA X is independent and Y is dependent✓Y is independent and X is dependentCBoth X and Y are independentDBoth X and Y are dependentAnswerCorrect option: B. Y is independent and X is dependentY is independent and X is dependentView full question & answer→
MCQ 61 MarkIn the regression equation of Y on X✓X is independent and Y is dependentBY is independent and X is dependentCBoth X and Y are independentDBoth X and Y are dependent.AnswerCorrect option: A. X is independent and Y is dependentX is independent and Y is dependentView full question & answer→
MCQ 71 MarkThere are ________ types of regression equationA4✓2C3D1AnswerCorrect option: B. 22View full question & answer→
MCQ 81 MarkIf equation of regression lines are 3x + 2y – 26 = 0 and 6x + y – 31 = 0 then means of x and y are ________A(7, 4)✓(4, 7)C(2, 9)D(-4, 7)AnswerCorrect option: B. (4, 7)(4, 7)View full question & answer→
MCQ 91 MarkIf $b_{x y}<0$ and $b_{y x}<0$ then 'r' is________A> 0✓< 0C> 1Dnot foundAnswerCorrect option: B. < 0< 0View full question & answer→
MCQ 101 MarkCov (x, y) = ________A$\Sigma(\mathrm{x}-\bar{x})(\mathrm{y}-\bar{y})$B$\frac{\sum(x-\bar{x})(y-\bar{y})}{n}$C$\frac{\sum x y}{n}-\bar{x} \bar{y}$✓b and $c$ bothAnswerCorrect option: D. b and $c$ bothView full question & answer→
MCQ 111 Mark$b_{y x}=$ ________✓$r \frac{\sigma_x}{\sigma_y}$B$r \frac{\sigma_x}{\sigma_y}$C$r \frac{\sigma_x}{\sigma_y}$D$r \frac{\sigma_x}{\sigma_y}$AnswerCorrect option: A. $r \frac{\sigma_x}{\sigma_y}$$r \frac{\sigma_x}{\sigma_y}$View full question & answer→
MCQ 121 Mark$b_{y x}=$ ________✓$r \frac{\sigma_x}{\sigma_y}$B$r \frac{\sigma_x}{\sigma_y}$C$r \frac{\sigma_x}{\sigma_y}$D$r \frac{\sigma_x}{\sigma_y}$AnswerCorrect option: A. $r \frac{\sigma_x}{\sigma_y}$$r \frac{\sigma_x}{\sigma_y}$View full question & answer→
MCQ 131 MarkWe can estimate the value of one variable with the help of other known variables only if they are✓CorrelatedBPositively correlatedCNegatively correlatedD UncorrelatedAnswerCorrect option: A. CorrelatedCorrelatedView full question & answer→
MCQ 141 MarkRegression equation of Y and X is✓$\mathrm{y}-\bar{y}=\mathrm{b}_{\mathrm{yx}}(\mathrm{x}-\bar{x})$B$\mathrm{x}-\bar{x}=\mathrm{b}_{\mathrm{xy}}(\mathrm{y}-\bar{y})$C$\mathrm{y}-\bar{y}=\mathrm{b}_{\mathrm{xy}}(\mathrm{x}-\bar{x})$D$\mathrm{x}-\bar{x}=\mathrm{b}_{\mathrm{yx}}(\mathrm{y}-\bar{y})$AnswerCorrect option: A. $\mathrm{y}-\bar{y}=\mathrm{b}_{\mathrm{yx}}(\mathrm{x}-\bar{x})$$\mathrm{y}-\bar{y}=\mathrm{b}_{\mathrm{yx}}(\mathrm{x}-\bar{x})$View full question & answer→
MCQ 151 MarkRegression equation of X and Y isA$\mathrm{y}-\bar{y}=\mathrm{b}_{\mathrm{yx}}(\mathrm{x}-\bar{x})$✓$\mathrm{x}-\bar{x}=\mathrm{b}_{\mathrm{xy}}(\mathrm{y}-\bar{y})$C$\mathrm{y}-\bar{y}=\mathrm{b}_{\mathrm{xy}}(\mathrm{x}-\bar{x})$D$\mathrm{x}-\bar{x}=\mathrm{b}_{\mathrm{yx}}(\mathrm{y}-\bar{y})$AnswerCorrect option: B. $\mathrm{x}-\bar{x}=\mathrm{b}_{\mathrm{xy}}(\mathrm{y}-\bar{y})$$\mathrm{x}-\bar{x}=\mathrm{b}_{\mathrm{xy}}(\mathrm{y}-\bar{y})$View full question & answer→
MCQ 161 Mark$\operatorname{Corr}\left(\frac{x-a}{c}, \frac{y-b}{d}\right)=-\operatorname{corr}(\mathrm{x}, \mathrm{y})$ if,✓c and d are opposite in signBc and d are same in signCa and b are opposite in signDa and b are same in signAnswerCorrect option: A. c and d are opposite in signc and d are opposite in signView full question & answer→
MCQ 171 MarkCorr (x, y) = ________Acorr(x, x)Bcorr(y, y)✓corr(y, x)Dcov(y, x)AnswerCorrect option: C. corr(y, x)corr(y, x)View full question & answer→
MCQ 181 MarkCorr(x, x) = ________A$0$✓1C-1Dcan’t be foundAnswerCorrect option: B. 11View full question & answer→
MCQ 191 MarkIf $\mathrm{u}=\frac{x-a}{c}$ and $\mathrm{v}=\frac{y-b}{d}$ then $\mathrm{b}_{\mathrm{xy}}=$_______A$\frac{d}{c} b_{u v}$✓$\frac{c}{d} b_{u v}$C$\frac{a}{b} b_{u v}$D$\frac{b}{a} b_{u v}$AnswerCorrect option: B. $\frac{c}{d} b_{u v}$$\frac{c}{d} b_{u v}$View full question & answer→
MCQ 201 MarkIf $\mathrm{u}=\frac{x-a}{c}$ and $\mathrm{v}=\frac{y-b}{d}$ then $\mathrm{b}_{\mathrm{yx}}=$_________✓$\frac{d}{c} b_{v u}$B$\frac{c}{d} b_{v u}$C$\frac{a}{b} b_{v u}$D$\frac{b}{a} b_{v u}$AnswerCorrect option: A. $\frac{d}{c} b_{v u}$$\frac{d}{c} b_{v u}$View full question & answer→
MCQ 211 Mark$b_{x y}$ and $b_{y x}$ are ________AIndependent of change of origin and scale✓Independent of change of origin but not of the scaleCIndependent of change of scale but not of originDAffected by change of origin and scaleAnswerCorrect option: B. Independent of change of origin but not of the scaleIndependent of change of origin but not of the scaleView full question & answer→
MCQ 221 Mark$\left|b_{x y}+b_{y x}\right|>$ ______A|r|✓2|r|CrD2rAnswerCorrect option: B. 2|r|2|r|View full question & answer→
MCQ 231 MarkIf $b_{y x}>1$ then $b_{x y}$ is ______A> 1✓< 1C> 0D< 0AnswerCorrect option: B. < 1< 1View full question & answer→
MCQ 241 MarkRegression analysis is the theory ofAEstimationBPrediction✓Both a and bDCalculationAnswerCorrect option: C. Both a and bBoth a and bView full question & answer→