Study the following output for Principal component analysis on "heptathlon" data and answer the following questions.

Output:

Importance of components:

PC1PC2PC3PC4PC5PC6

Standard deviation2.11191.09280.721810.676140.495240.27010

Proportion of Variance0.63720.17060.074430.065310.035040.01042

Cumulative Proportion0.63720.80780.882230.947540.982580.99300

PC7

Standard deviation0.2214

Proportion of Variance0.0070

Cumulative Proportion1.0000

1) If you want to take into account almost 95% variability in the data then how many principal components will you choose?

a) 1 b) 2 c) 3 d) 4

2) Now if you use Kaiser's criterion of selecting optimal number of Principal components then how many principal components will you choose?

a)1 b) 2 c) 3 d) 4

3) In principal component analysis what is the angle between principal components'?

a)00 b) 450 c) 900 d) >450

4) In order to perform factor analysis on a dataset having dispersion matrix ?, we must have,

a) ? = I, b) ? ? I c) ? can be anything d) None.

5) What can you say about Promax and Varimax rotations in Factor Analysis?

a) Factors obtained in both rotation methods are orthogonal (perpendicular).

b) Factors obtained in both rotation methods are not orthogonal.

c) Factors obtained in Promax rotation are orthogonal whereas factors obtained in Varimax rotation are not.

d) Factors obtained in Varimax rotation are orthogonal whereas factors obtained in Promax rotation are not.

Question 6 10 pts Which of the following statements regarding the balance sheet is INCORRECT? if\" The balance sheet reports long-term debt on the right-hand side. If\" The balance sheet reports the market values of assets, liabilities, and shareholders' equity. f\" The balance sheet provides a snapshot of a rm's nancial position at a given point in time. 5\"\" The balance sheet reports stockholders' equity on the right- hand side. QUESTION 25 An underperforming economy is one where O A. Actual real GDP is below the full employment level of GDP. O B. Workers' job performance lags due to slow changes in technology. O C. Actual real GDP is higher than the full employment level of GDP. O D. The full employment level of GDP is almost equal to actual real GDP.Question 35 (1 point) What do we know about regulation of a firm in a monopolistically competitive market? It usually implies a very small administrative burden. It will lower the firm's costs. It is commonly used to enhance market efficiency. It is unlikely to improve market efficiency. Question 36 (1 point) What type of externalities accompany the entry of new firms into a monopolistically competitive market? the product-variety externality as a positive externality and the business-stealing externality as a negative externality the product-variety externality as a negative externality and the business-stealing externality as a positive externality the business-variety externality as a positive externality and the product-stealing externality as a negative externality O the business-variety externality as a negative externality and the product-stealing externality as a positive externalityD Question 8 1 pts AD AS AS 120 100 Price level 80 (CPD) 60 40 AD 20 0 1 2 3 4 5 6 Real GDP (billions of dollars per year) A shift in the aggregate supply curve in the graph above from AS1 to AS2 would be caused by a(n): O increase in consumer spending. O increase in input prices. O decrease in input prices. O decrease in real output.D Question 9 1 pts AD AS AS 120 100 Price level 80 CPI) 60 40 AD 20 0 1 2 3 4 4 5 6 Real GDP (billions of dollars per year) In the graph above, the change in equilibrium from E1 to Ez represents: O deflation. O demand-pull inflation. O price-push inflation. O cost-push inflation. D Question 10 1 pts AS 150 125 Price level 100 (CPD) 75 50 25 AD, 0 2 4 6 8 10 12 Real GDP (billions of dollars per year) In the graph above, which of the following is not consistent with a shift in the aggregate demand curve from AD, to AD2? O A decrease in income tax rates. O An increase in business investment. O An increase in government spending. O An increase in interest rates