Bivariate Data, Correlations, R and R Squared

Quiz
•
Other
•
10th Grade - University
•
Hard
Standards-aligned
Barbara White
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Correlation analysis is
univariate analysis.
bivariate analysis.
multivariate analysis.
both bivariate and multivariate analysis.
Answer explanation
Correlation analysis requires more than one variable.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which one is NOT appropriate to use to study the association between variables?
Scatterplot.
Pie chart.
Correlation.
Regression.
Answer explanation
Pie chart is suitable to illustrate the percentage distribution.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Describe the relationship.
Positive linear relationship.
Negative linear relationship.
Positive curvilinear relationship.
Negative curvilinear relationship.
Answer explanation
As x increases, y decreases.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Two variables have a positive association when
the value of one variable tends to increase as the other variable increases.
the value of one variable tends to increase as the other variable decreases.
the value of one variable tends to increase regardless how the other variable change.
the values of both variables are always positive.
Answer explanation
Both variables move in the same direction although the numbers are negative.
Tags
CCSS.HSF-LE.A.1B
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The correlation coefficient, r is used to determine
y values given values of x.
x values given values of y.
the strength and direction of relationship between x and y.
none of these.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If there is a strong correlation, the value of r must be
any value larger than 1.
closer to -1 if the correlation is negative.
closer to 0 if the correlation is positive.
none of these.
Answer explanation
The closer to 1 and -1, the stronger the relationship.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The correlation coefficient
is the same as r2.
can never be negative.
is the square of coefficient of determination.
is the square root of coefficient of determination.
Answer explanation
We use the r2 to get the coefficient of determination!
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