TRB COMMERCE Question Paper with Answers Part -4

TRB COMMERCE Question. 

Answers are bold in letters for better understanding/reference and easy hand on answers..

31. The probable error is
A) 0.6745 x SE B) 0.6457 SE
C) 0.6753 SE D) none of these.

32. The limit of population correlation is given by
A) r ± P.E. 
B)r ± 3.5 P.E.
C)
3 P.E.
D) none of these.

33. While forming grouped frequency distribution, the number of classes should be
A) less than 5 B) more than 20
C) between 4 and 10 D) between 5 and 15.

34. Which of the following would you regard as discrete variables ?
A) Weight B) Height
C) Time D) Number of persons in a family.

35. The ranks according to two attributes in a sample are given below :
R1 1 2 3 4 5
R2 5 4 3 2 1
The rank correlation between them is
A) 0 B) +1
C) -1 D) none of these.

36. A new company is formed in
A) Absorption
B) Amalgamation
C) Internal Reconstruction
D) None of these.

37. DIC was established in
A) 1976 B) 1977
C) 1978 D) None of these.

38. SIPCOT’s financial assistance for medium and major industries will be in the form of
A) term loan under IDBI’s refinance scheme
B) seed capital under IDBI’s seed capital scheme
C) underwriting the capital issues and participation in equity
D) all of these.

39. Statistics can
A) prove anything
B) disprove anything
C) neither prove nor disprove anything, but it is just a tool
D) none of these.

40. Secondary data
A) should never be used
B) should be used after careful scrutiny
C) no scrutiny is required while using it
D) none of these.



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