# Quiz (Bivariate and Pearson Correlation)

## Quiz by Louise Lyn Angeles

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- Q1
Couples who share more similar attitudes indicate that they are more satisfied with their relationship. This reflects a ___________ correlation.

No correlation

Strong negative

Strong Positive

Weak Positive

30s - Q2
Correlation is _____type of statistical analysis.

trivariate

multivariate

univariate

bivariate

30s - Q3
The diagram shown is an example of a ____________.

histogram illustrating a lack of correlation between tobacco and alcohol

scatter plot illustrating a positive correlation between tobacco and alcohol

scatter plot illustrating a perfect correlation between tobacco and alcohol

histogram illustrating a positive correlation between tobacco and alcohol

60s - Q4
What is the relationship of this statement: The temperature outside and the number of layers of clothes you need to stay warm.

Negative correlation

Weak Positive

Positive correlation

No correlation

60s - Q5
The measure of the linear correlation (dependence) between two variables X and Y, giving a value between +1 and −1 is called ______.

Pearson a

Pearson r

Pearson s

Pearson z

60s - Q6
The closer the value of r is to 1 or -1, the _____ is the linear relationship between the two variables.

weaker

direct

stronger

inverse

60s - Q7
The strength of linear relationship between x and y is very weak if the absolute value of correlation coefficient value is

0-0.2

0.6-0.8

0.4-0.6

0.2-0.4

60s - Q8
A plot of pairs of values of two variables in a rectangular coordinate plane displaying a relationship between the two variables.

Outlier

Graph

Pearson

Scatter Diagram

60s - Q9
Which scatterplot shows most likely a positive correlation?

C only

Both A and B

A only

B only

60s - Q10
In terms of strength of association, how do you compare scatterplot I with II?

The strength of association in Scatterplot II is greater.

The strength of association in Scatterplot I is greater.

The strength of association in the scatterplots cannot be compared.

The strength of association in both scatterplots II is the same.

60s