Correlation Analysis

Correlation Analysis

University

10 Qs

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9th Grade - University

10 Qs

Correlation Analysis

Correlation Analysis

Assessment

Quiz

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University

Practice Problem

Medium

Created by

Maurin_ Rycan

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can a correlation coefficient of +1 be interpreted?

No relationship between the variables
Perfect positive linear relationship
Perfect negative linear relationship
Weak positive linear relationship

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is covariance defined for a sample?

It is divided by the standard deviation to obtain the correlation coefficient

It measures the extent of variation in one variable associated with a variance in the other variable

It measures the relationship between height and weight for individuals

It is calculated using the differences of each observation from the mean

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does a correlation coefficient of 0 indicate?

No linear relationship
Weak positive correlation
Perfect negative correlation
Perfect positive correlation

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the correlation coefficient measure?

The correlation coefficient measures the strength and direction of the linear relationship between two variables.
The correlation coefficient measures the ratio between two variables.
The correlation coefficient measures the difference between two variables.
The correlation coefficient measures the average of two variables.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why does correlation not imply causation?

There can be many reasons for statistical correlation between two variables

It can only be used when there is a perfect positive linear relationship between variables

It is only applicable when one variable causes another

Causation can only be determined through regression analysis

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the range of possible values for the correlation coefficient?

0 to 1
-1 to 1
1 to 10
-10 to 10

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of regression analysis?

The purpose of regression analysis is to predict future outcomes.

To determine if the variation in one variable affects another variable

The purpose of regression analysis is to determine causation between variables.
The purpose of regression analysis is to measure the central tendency of a dataset.

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