What is different about what the sign of a correlation (negative
or positive) tells us vs. the magnitude of the correlation
coefficient (i.e. how much r is greater than or less than
zero)?
Explain what the value of R tells you about the scatterplot.
(three or four sentences)
Explain what the value R squared tells you about the model.
(three or four sentences)
Questions about relationship*
1. Explain the relationship between correlation
analysis dan regression analysis( * is relationsip, not difference
)
2. Explain the relationship between correlation covariance
3. Explain the relationship on this three analysis
7) COVARIANCE AND CORRELATION COEFFICIENT. What is covariance?
How is covariance and correlation coefficients linked? How does the
concept of covariance link to the Timura depiction of an efficient
frontier oriented “silver bullet” In addition, draw a graphic that
explains your thinking using real estate, international, private
equity, venture capital, etc.
The shape of indifference curves tells
you something about the relationship between consumption goods.
A. Define (in your own words) the
meaning of MRSSB where S indicates steaks and B
indicates beer. What does the MRS have to do with the construction
of indifference curves? (4)
B. Suppose an individual’s marginal
rate of substitution of steak for beer (MRSSB) is 2:1.
Suppose also that the price of steak is $ 4 and the price of beer
is $ 1. In...
List the type of correlation and casual relationship that you
would expect to find for each of the following pairs of variables.
a) the price of gasoline at the pump, the current world price of
crude oil b) the fish population in a lake, the number of cottages
around the lake c) the humidex rating (an index based on air
temperature and humidity), the number of respiratory ailments
reported d) the stock price of a telephone company, the cost of...
Calculate the covariance and correlation coefficients by
completing the below table, assuming sample data. Show all
workings. (Note: You can calculate the mean and standard deviation
of X & Y with Excel or your calculator; no working for their
calculation is required.)
X
Y
(X - X bar)
(Y - Y bar)
(X - X bar)(Y - Y bar)
5
5
2
3
5
4
8
7
6
9
(b) Comment on the
direction and strength of the association between X...
Please explain and give an example for each of the
following:
What is the relationship between the FFT of a signal and the
length of the sinewave, i.e. the number of samples?
What is the relationship between the FFT of a signal and the
frequency of the sine wave?
What the region of main spectral energy is