
Quiz 1

Quiz
•
Mathematics
•
University
•
Medium
edna christopher
Used 2+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What operation brightens an image matrix?
Scalar multiplication
Matrix inverse
Matrix determinant
Matrix transpose
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Eigenvalues are associated with which matrix property?
Transformation scaling
Zero matrix
Diagonal elements
Rank
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
PCA stands for:
Principal Component Analysis
Principal Calculation Analysis
Projected Component Architecture
Predictive Classification Algorithm
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the effect of increasing pixel values using matrix addition?
a)Darkening
What is the effect of increasing pixel values using matrix addition?b)Color inversion
c)No effect
d)Brightening
Brightening
Darkening
Color inversion
No effect
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The eigen values of a covariance matrix from a censored data are 2,5 and 1. Identify the eigen value corresponding to first principal component.
5
2
1
3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The matrix formed from a grayscale image is:
Polynomial
Boolean
2D numerical array
Vector
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In PCA, eigenvectors are used to:
Identify principal directions
Find the mean of the data
Shrink matrix size
Eliminate noise
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