Dimension Reduction

Dimension Reduction

University

5 Qs

quiz-placeholder

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Dimension Reduction

Dimension Reduction

Assessment

Quiz

Mathematics

University

Practice Problem

Hard

Created by

Taufique Hossain

Used 6+ times

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Correlation analysis is used for

Detecting relation between two variables

Check for Multicollinearity

Detect duplication of variables

All of the above

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which plot can be used to show correlations

Box plot

Bar Plot

Side by side correlation plot

Heatmaps

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

PCA

Reduces number of observations

Reduces number of variables

Detects pattern between variables

Detects the components in a variable

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which value should you look at to determine how many PCs to use?

Mean

Standard deviation

Proportion of Variance

Cumulative Proportion

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

To remove scale effect and reduce the dominant effect of any variable we use

Normalization

PCA

Linear Regression

Variance Reducer

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