1
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
If two variables X and Y are independent, then what is the correlation coefficient between them?
2
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Consider the following statements
1. The algebraic sum of deviations of a set of values from their arithmetic mean is always zero.
2. Arithmetic mean > Median > Mode for a symmetric distribution.
Which of the above statements is/are correct?
1. The algebraic sum of deviations of a set of values from their arithmetic mean is always zero.
2. Arithmetic mean > Median > Mode for a symmetric distribution.
Which of the above statements is/are correct?
3
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Let the correlation coefficient between X and Y be 0.6. Random variables Z and W are defined as Z = X + 5 and W = $${Y \over 3}$$. What is the correlation coefficient between Z and W ?
4
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
If all the natural numbers between 1 and 20 are multiplied by 3, then what is the variance on the resulting series?
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