Question

A scatter plot shows:

the direction and strength of a relationship between the independent and dependent variables. |
||

nothing. The line of best fit is what is important. |
||

that there is a linear relationship between the independent and dependent variables. |
||

how you can predict the dependent variable knowing the independent variable. |

Answer #1

**A scatterplot is a diagrammatic representation of the
dependent and independent variables; all the points are plotted
against the horizontal and vertical axes.**

**The scatterplot, therefore shows whether the points are
closely clustered, or not; thus a scatterplot shows the strength of
relation between the two variables, if there is a
relationship.**

**The scatterplot also helps us see how the change in one
variable impacts the other. So, the direction of relationship is
also evident from the scatterplot.**

**So, the correct answer is option (A) The direction and
strength of a relationship between the independent and dependent
variables.**

True or False. A scatter plot shows the direction of a
relationship between the variables.

The slope coefficient (b) measures the ______________ of the
linear relationship between the independent and dependent variable
while the correlation coefficient indicates the _______________ of
the relationship.
a. strength; direction
b. form; strength
c. direction; form
d. strength; form

The table shows data collected on the relationship between age
(in years) and daily time spent on the phone. The line of best fit
for the data is yˆ=−0.68x+95.6. Assume the line of best fit is
significant and there is a strong linear relationship between the
variables. Age (Years) 30405060 Minutes on the Phone 75696155 (a)
According to the line of best fit, what would be the predicted
number of daily minutes spent on the phone for a person who...

From a scatter plot of data r2 = 0.0039 and no
correlation is shown between exam marks and hours spent studying.
The line of best fit of yp= -0.197x + 81 shows a
negative slope, showing that the more you study, the lower the exam
mark is. What changes to the data set could be made in general to
account for this error.

Create a scatter plot with the following data: (5, 40), (10,80),
(17, 100), (20, 105), (23,100), (30, 120). Which of the following
statements is most correct? Question 8 options: The values for the
dependent variable are determined by the values for the independent
variable. The variable on the horizontal axis should be the
independent variable. A scatter plot like this one shows the trend
in the data over time. The values in a scatter plot should be
connected by a...

Select at least three variables that you believe have a linear
relationship.
A. Specify which variable is dependent and which are
independent.
B. Collect the data for these variables and describe your data
collection technique and why it was appropriate as well as why the
sample size was best.
C. Submit the data collected by submitting the SPSS data file
with your submission.
D. Find the Correlation coefficient for each of the possible
pairings of dependent and independent variables and...

A calculus instructor is interested in finding the strength of a
relationship between the final exam grades of students enrolled in
Calculus I and Calculus II at his college. The data (in
percentages) are listed below. Complete the hypothesis test to
predict the Calculus II grade if the Calculus I grade was 80?
Calculus 1: 88 78 62 75 95 91 83 86 98
Calculus 2: 81 80 55 78 90 90 81 80 100
By visual observation of the...

A calculus instructor is interested in finding the strength of a
relationship between the final exam grades of students enrolled in
Calculus I and Calculus II at his college. The data (in
percentages) are listed below. Complete the hypothesis test to
predict the Calculus II grade if the Calculus I grade was 80?
Calculus 1: 88 78 62 75 95 91 83 86 98
Calculus 2: 81 80 55 78 90 90 81 80 100
By visual observation of the...

Given the problem above, with the same data set,
scatterplot.xlsx, the scatter plot suggests a ________
["linear" OR "nonlinear"] relationship between the
dependent and independent variables.
Data:
x
y
45
2358
56
4204
26
287
54
3849
24
925
23
3273
34
-678
45
3748
47
2898
43
1974
32
226

Relationship between two variables can be examined using the
following:
Group of answer choices
Scatter plot
2 by 2 contingency table
Correlation coefficient
All of the above

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