Question
In: Statistics and Probability
What would you conclude if a sample correlation coefficient is equal to -1.00? A. Most of...
What would you conclude if a sample correlation coefficient is equal to -1.00?
| A. |
Most of the data points must fall exactly on a horizontal straight line. |
|
| B. |
All the data points must fall exactly on a straight line with a positive slope. |
|
| C. |
All the data points must fall exactly on a straight line with a negative slope. |
|
| D. |
Most of the data points must fall exactly on a straight line with a positive slope. |
Solutions
Expert Solution
Solution: The option is C.
C) All the data points must fall exactly on a straight line with a negative slope.
When one variable is upward direction and other variable is downward direction then the correlation is negative.
orchestra answered 1 year agoRelated Solutions
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What would you conclude most managers would do if they know
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Should managers then be evaluated using absorption costing income
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In a two-tailed test for correlation at α = .05, a sample correlation coefficient r =...
In a two-tailed test for correlation at α = .05, a
sample correlation coefficient r = 0.42 with n =
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True or False
6. What is the difference between the correlation coefficient and ?2? Why should the correlation coefficient...
6. What is the difference between the correlation coefficient
and ?2? Why should the correlation coefficient be -1 and
1?
7. What is the utility of marginal effects in regression
models? How are they obtained?
8. What is heterocedasticity and homocedasticity? Explain how
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1) Is ryx = rxy? That is, will the sample correlation coefficient be the same if...
1) Is ryx =
rxy? That is, will the sample correlation coefficient be
the same if you exchange continuous random variables X and Y? Why
or why not?
2) What type of
association does the correlation coefficient, ryx,
quantify?
3) Should the
estimated correlation be extrapolated beyond the observed ranges of
the variables?
4) Is the sample
correlation coefficient, ryx, sensitive to extreme
outliers? Explain.
5) Can you calculate
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a. Describe what the Pearson correlation coefficient is and what the coefficient of determination is. compare...
a. Describe what the Pearson correlation coefficient is and what
the coefficient of determination is.
compare it to a real world example or a example problem
Can a correlation coefficient be statistically significant? If so, what would be the null hypothesis be?...
Can a correlation coefficient be statistically significant? If
so, what would be the null hypothesis be? Please provide good,
clear detail as if you were trying to explain the information in
detail but enough for a 12 year old to understand
Provided a detailed summary of what type of correlation coefficient would be calculated for the relationship...
Provided a detailed summary of what type of correlation
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Test to see if the population correlation coefficient is not equal to zero using significance of 0.05. What are your conclusions?
Consider the following
X:
4
7
2
6
6
Y:
6
9
5
5
7
Using XLS, calculate the correlation coefficient for this
sample. Test to see if the population correlation coefficient is
not equal to zero using significance of 0.05. What are your
conclusions?
The correlation coefficient r is a sample statistic. What does it tell us about the value...
The correlation coefficient r is a sample statistic. What does
it tell us about the value of the population correlation
coefficient ρ (Greek letter rho)? You do not know how to build the
formal structure of hypothesis tests of ρ yet. However, there is a
quick way to determine if the sample evidence based on ρ is strong
enough to conclude that there is some population correlation
between the variables. In other words, we can use the value of r...
The correlation coefficient r is a sample statistic. What does it tell us about the value...
The correlation coefficient r is a sample statistic.
What does it tell us about the value of the population correlation
coefficient ρ (Greek letter rho)? You do not know how to
build the formal structure of hypothesis tests of ρ yet.
However, there is a quick way to determine if the sample evidence
based on ρ is strong enough to conclude that there is some
population correlation between the variables. In other words, we
can use the value of r...
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