Question 1

Two matrices A and B are multiplied to get AB if

Accepted Answer

A) Both are rectangular 
B) Both have same order 
C) No of columns of A is equal to columns of B 
D) No of rows of A is equal to rows of B C

Question 2

The additive model of the time series is:

Accepted Answer

A) Y = T + S + C + I 
B) Y = TSCI 
C) Y = a + bX 
D) Y = a + bX + cX A

Question 3

Two matrices A and B are multiplied to get AB if,

Accepted Answer

A) both are rectangular 
B) both have the same order 
C) number of columns of A is equal to number of rows of B 
D) number of rows of A is equal to number of columns of B C

Question 4

Increase in the number of patients in the hospital due to stroke is

Accepted Answer

A) Secular trend 
B) Irregular variation 
C) Seasonal variation 
D) Cyclical variation

Question 5

Which of the following is true?

Accepted Answer

A) A.B = A'.B 
B) (c) A.B = A.B' 
C) (A
B) ' = B'.A' 
D) (d) (A=
B) ' = A'. B'

Question 6

Cramer's Rule is not suitable for which type of problems?

Accepted Answer

A) Small systems with 4 unknowns 
B) Systems with 2 unknowns 
C) Large systems 
D) None of the above

Question 7

For the equations 2x-y=5;3x+2y=-3; The values of x and y are

Accepted Answer

A) -1 and 3 
B) 1 and -3 
C) 2 and 3 
D) NOTA

Question 8

The determinant of identity matrix is :

Accepted Answer

A) 1 
B) 0 
C) Depends on the matrix 
D) None of the above

Question 9

Damages due to floods, droughts and strikes fires are associated with the components of which of the time series

Accepted Answer

A) Secular trend 
B) Cyclical variation 
C) Seasonal variation 
D) Irregular variation

Question 10

Cramer's rule fails for

Accepted Answer

A) Determinants > 0 
B) Determinants < 0 
C) Determinants = 0 
D) None of the above

Question 11

In semi averages method, the given data is divided into:

Accepted Answer

A) Two equal parts 
B) Three equal parts 
C) Four equal parts 
D) Difficult to tell

Question 12

If matrix A is of order m×n then the matrix of order n×m is called

Accepted Answer

A) Transpose of A 
B) Inverse of A 
C) Main diagonal of A 
D) Echelon form of A

Question 13

Two matrices A and B are multiplied to get AB if

Accepted Answer

A) Both are rectangular 
B) Both have same order 
C) Number of columns of A is equal to columns of B 
D) Number of rows of A is equal to columns of B

Question 14

A matrix having 'm' rows and 'n' columns with m?n is said to be a

Accepted Answer

A) Scalar Matrix 
B) Identity Matrix 
C) Square Matrix 
D) Null Matrix

Question 15

The matrix [6] is

Accepted Answer

A) Square matrix 
B) Row matrix 
C) Column matrix 
D) All of the above

Question 16

If the price of commodity' X' is 4 in the year 2003 and 5 in the year 2004. Then, the price index for the year 2004, used 2003 as base year is:

Accepted Answer

A) 100 
B) 125 
C) 130 
D) 135

Question 17

Changes that have taken place as a result of such forces that could not be predicted like floods, earthquakes, famines, etc is known as:

Accepted Answer

A) Secular trend 
B) Seasonal movements 
C) Irregular variations 
D) Cyclical variations

Question 18

A matrix that has elements in the horizontal line only is known as:

Accepted Answer

A) Square Matrix 
B) Determinant 
C) Row Matrix 
D) Column Matrix

Question 19

The element residing in the 3rd column and 4th row is represented by:

Accepted Answer

A) (a)a12 
B) (b) a43 
C) (c) a34 
D) NOTA

Exam 10: Matrix Operations and Time Series Analysis

Two matrices A and B are multiplied to get AB if

The additive model of the time series is:

Two matrices A and B are multiplied to get AB if,

Increase in the number of patients in the hospital due to stroke is

Which of the following is true?

Cramer's Rule is not suitable for which type of problems?

For the equations 2x-y=5;3x+2y=-3; The values of x and y are

The determinant of identity matrix is :

Damages due to floods, droughts and strikes fires are associated with the components of which of the time series

Cramer's rule fails for

In semi averages method, the given data is divided into:

If matrix A is of order m×n then the matrix of order n×m is called

Two matrices A and B are multiplied to get AB if

A matrix having 'm' rows and 'n' columns with m?n is said to be a

The matrix [6] is

If the price of commodity' X' is 4 in the year 2003 and 5 in the year 2004. Then, the price index for the year 2004, used 2003 as base year is:

Changes that have taken place as a result of such forces that could not be predicted like floods, earthquakes, famines, etc is known as:

A matrix that has elements in the horizontal line only is known as:

The element residing in the 3rd column and 4th row is represented by: