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Quiz 1

Authored by edna christopher

Mathematics

University

Used 2+ times

 Quiz 1
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10 questions

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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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