AnswersAL-Science 7 ACell Theory

Exploring Association Answers

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21
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Determine if there is a correlation and slope for the scatterplot.

A
positive correlation, positive slope
B
negative correlation, negative slope
C
negative correlation, positive slope
D
no correlation
22
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Determine if there is a correlation and slope for the scatterplot.

A
positive correlation, positive slope
B
positive correlation, negative slope
C
negative correlation, negative slope
D
no correlation, undefined slope
23

Analyze the scatterplot to determine its characteristics. Check all that apply.

A
no correlation
B
nonlinear association
C
weak association
D
clusters about a line
E
positive slope
24

Identify the level of association and correlation in the scatterplot.

A
strong association, negative correlation
B
weak association, negative correlation
C
strong association, positive correlation
D
weak association, positive correlation
25

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26

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27

Which describes the correlation shown in the scatterplot?

Question illustration
A
There is a positive correlation in the data set.
B
There is a negative correlation in the data set.
C
There is no correlation in the data set.
D
More points are needed to determine the correlation.
28

Tumu’s class was given an assignment to feature a scientist that contributed to the development of the cell theory. The class decided to use images to feature the scientist of their choice.Which image would Tumu most likely use in his assignment to feature Rudolf Virchow?

A
the magnified shapes of cells in a piece of cork
B
the different cells that make up a plant leaf
C
the types of cells at work in the human body
D
the way root cells reproduce to increase root length
29

Sample Response: The data seem to cluster about a curve, so there is an association. The association is nonlinear because the cluster is about a curve. It is a strong association because the points are close to the curve. Which did you include in your response? Check all that apply. There is a cluster of data.The cluster is about a curve.The association is nonlinear.The association is strong.

A
There is a cluster of data.
B
The cluster is about a curve.
C
The association is nonlinear.
D
The association is strong.
30

What type of association and correlation are shown by the scatterplot?

Question illustration
A
linear association, positive correlation
B
linear association, negative correlation
C
nonlinear association, strong correlation
D
nonlinear association, weak correlation
31

I. Plant cells are formed from fertile soil.II. Animal cells must function properly for an organism to be healthy.III.Cells make up the petals, stem, and leaves of a lily plant.IV. Bacteria are produced from other living bacteria.

A
Schwann would make Statement I and Schleiden would make Statement IV.
B
Schwann would make Statement II and Schleiden would make Statement III.
C
Schwann would make Statement III and Schleiden would make Statement II.
D
Schwann would make Statement IV and Schleiden would make Statement I.
32

A scatterplot has a positive, linear correlation. Which statement is true about the relationship between the x- and y-values?

A
As the x-values increase, the y-values tend to increase.
B
As the x-values increase, the y-values tend to decrease.
C
As the x-values decrease, the y-values tend to increase.
D
As the x-values decrease, the y-values tend to vary randomly.
33

Which scatterplot shows the strongest negative linear association?

A
On a graph, points are grouped closely together and increase.
Option A
B
On a graph, points are grouped closely together to form a line and increase.
Option B
C
On a graph, points are grouped closely together and decrease.
Option C
D
On a graph, points are grouped closely together to form a line and decrease.
Option D
34

Adele and Monte are discussing graphs with negative correlation. Adele claims that only graph B has negative correlation. Monte claims that both scatterplots have a negative correlation. Graph A Graph B Which statement it true regarding their claims?

Question illustration
A
Adele is correct because only lines may have a negative slope.
B
Adele is correct because the y values increase as the x values decrease in graph A, so it shows a positive correlation.
C
Monte is correct because both graphs show a strong correlation.
D
Monte is correct because in both scatterplots, the y values decrease as the x values increase so both have a negative correlation.
35

Alya claims that the scatterplot shows a linear correlation. Enrique claims that the scatterplot has no correlation. Which statement about their claims is true?

Question illustration
A
Alya is correct because the scatterplot clusters about a line with a slope of zero.
B
Alya is correct because as the x-values increase, the y-values remain the same.
C
Enrique is correct because the scatterplot clusters about a curve.
D
Enrique is correct because as the x-values increase, the change has no effect on the y-values.
36

A scatterplot has a negative, linear correlation. Which statement is true about the relationship between the x- and y-values?

A
As the x-values increase, the y-values tend to increase.
B
As the x-values increase, the y-values tend to decrease.
C
As the x-values decrease, the y-values tend to decrease.
D
As the x-values decrease, the y-values tend to vary randomly.
37

Muscles in a kangaroo’s legs work because of the cells that make up the muscle. Which component of cell theory does this best illustrate?

A
All living things are made of cells.
B
Cells are the basic unit of structure and function of all living things.
C
All cells come from other cells.
D
Cells are generated from nonliving materials.
38

Which scatterplot shows the weakest positive linear association?

A
On a graph, points are grouped closely together and increase.
Option A
B
On a graph, points are grouped closely together to form a line and increase.
Option B
C
On a graph, points are grouped closely together and decrease.
Option C
D
On a graph, points are grouped closely together to form a line and decrease.
Option D

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