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Describing Scatterplots
Describing Scatterplots
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Describing correlation from scatter plots
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
Which r value has the weakest correlation?
.60
1
.27
-.99
2
Which of the following words would you use to describe the correlation of this scatterplot?
strong
weak
none
medium
3
What type of regression is shown?
non-linear
linear
4
Complete this statement: As the number of hours of sleep increases, the test score ___________.
increases
decreases
can't tell- no correlation
doesn't change
5
What is a good estimate of the correlation coefficient?
-0.5
0.96
0.5
-0.96
6
Complete this statement: As the number of hours of sleep increases, the test score ___________.
doesn't change
decreases
can't tell- no correlation
increases
7
What type of correlation is shown?
none
positive
negative
8
In Nevada, there is ________ correlation between the elevation and the temperature.
negative
no
strong
9
Scatterplots are used to display:
Univariate data
Bivariate data
10
What type of regression is shown?
linear
non-linear
11
If r = -.85, how can you describe the correlation?
Positive Strong
Negative Weak
Positive Weak
Negative Strong
12
The scatterplot below shows:
A strong negative correlation
A weak negative correlation
A weak positive correlation
A perfect negative correlation
13
What type of correlation is shown?
positive
negative
none
14
Describe the relationship.
A higher temperature brings less beach visitors.
A lower temperature brings more beach visitors.
A lower temperature brings less beach visitors.
A higher temperature brings more beach visitors.
15
How would you describe the type of correlation?
nonlinear
linear
16
The scatterplot below shows:
As music marks increase, engineering marks increase
As engineering marks decrease, music marks decrease
There is no correlation between marks in music engineering
As music marks increase, engineering marks decrease
17
What is a good estimate of the correlation coefficient?
0.95
-0.5
-0.95
0.5
18
As a person's math final increases, their SAT math score ________________.
can't tell- no correlation
doesn't change
decreases
increases
19
How would you describe the correlation?
nonlinear
linear
20
The scatterplot below shows:
A weak positive correlation
A strong positive correlation
A weak negative correlation
No correlation
