1061. Statistics branches include__________
A. Applied Statistics
B. Mathematical Statistics
C. Industry Statistics
D. Both A and B
✅ The correct answer is option D.
UPSC
1062. A scatter diagram is________
A. A statistical test
B. Linear
C. Curvilinear
D. A graph showing x and y values
✅ The correct answer is option D.
1063. When the two regression line coincide, then r is_________
A. 1
B. -1
C. 0
D. None of these
✅ The correct answer is option C.
1064. Which is a method of measuring correlation?________
A. Graphic correlation
B. Scatter diagrams
C. None of these
D. Both of these
✅ The correct answer is option D.
1065. When a multiple correlation coefficient r 1.2=1, then it shows __________
A. Reasonably good relationship
B. Lack of linear relationship
C. Perfect relationship
D. None of these
✅ The correct answer is option C.
1066. If there are ten values each equal to 10, then standard deviation of these values is___________
A. 100
B. 20
C. 10
D. 0
✅ The correct answer is option C.
1067. When a multiple correlation coefficient R 1.23 =1 , then R 2.13 is________
A. 1
B. -1
C. 0
D. None of these
✅ The correct answer is option A.
1068. Which of the following is true if the estimating equation has to be a perfect estimator of the dependent variable?______________
A. The coefficient of determination is -1
B. All the data points are on the regression line.
C. The standard error of the estimate is zero
D. B and C
✅ The correct answer is option D.
1069. What will be the range of r when we find that the dependent variable increases as the independent variable increases?__________
A. 0 to -0.05
B. 1 to 2
C. 0 .1 to 1
D. None of these
✅ The correct answer is option C.
1070. The ratio of the average deviations is called__________
A. Regression
B. Correlation
C. Skewness
D. All of these
✅ The correct answer is option A.