1
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
In which one of the following cases would you expect to get negative correlation?
2
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
If the correlation coefficient between x and y is 0.6, covariance is 27 and variance of y is 25, then what is the variance of x?
3
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Let $$\overline x $$ be the mean of x1, x2, x3, ....., xn. If xi = a + cyi for some constants a and c, then what will be the mean of y1, y2, y3, ....., yn ?
4
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Consider the following statements
I. If the correlation coefficient rxy = 0, then the two lines of regression are parallel to each other.
II. If the correlation coefficient rxy = 1, then the two lines of regression are perpendicular to each other.
Which of the above statements is/are correct?
I. If the correlation coefficient rxy = 0, then the two lines of regression are parallel to each other.
II. If the correlation coefficient rxy = 1, then the two lines of regression are perpendicular to each other.
Which of the above statements is/are correct?
Questions Asked from Statistics (Marks 2.5)
Number in Brackets after Paper Indicates No. of Questions
NDA Subjects
Mathematics
Algebra
Sets, Relations and Functions Logarithms Quadratic Equations and Inequalities Sequence And Series Binomial Theorem Matrices Determinants Permutations and Combinations Probability Complex Numbers Vector Algebra Three Dimensional Geometry Statistics
Trigonometry
Trigonometric Angles and Equations Inverse Trigonometric Function Height and Distance Properties of Triangles
Coordinate Geometry
Calculus
English
General Studies