BCS

Document Sample
BCS Powered By Docstoc
					       SUPERIOR AIM COLLEGE (Regd)
                           Business Statistics & Mathematics
Total Time: 1:40 mints               Total marks: 60              Passing Marks: 45

Attempt any three questions but question No.2 is compulsory.

Q.No.1

(a) What is CPI. Write down the steps in the construction of CPI?                                     (10)

(b) An inquiry into the budgets of the middle class families is a city in Pakistan gave
the following information:                                                        (10)

                             Food          Rent        Cloting            Fule             Mics
       Expanses on
                             35%           15%          20%               10%              20%
 Prices (1928)                150            30             75             25               40

Prices (1929)            145        30           65         23         45
 Calculate the proper index number for 1929 to the date using Family Budget
Method.

Q.2 Write a note on:

1. Scatter Diagram        2.Method of moving average              3.Regression        4.Seasunal
variation                                                                                             (20)

Q.No. 3

What is Method of Least Square?

The following are the quarterly index numbers of whole sale prices.                                   (5+15)

 Years                        1928          1929            1930          1931             1932

 Quarterly Index              125           114              99             80              80


Fit a liner trend to these data and find trend value (Y). Take the deviations of the
observed values (Y) from the trend values (Y) and verify that ∑(Y - Ŷ) = 0

Q.No. 4

(a) Define correlation coefficient. Define Time Series.                                               (6+14)

(b)

 X                   1       2        3        4       5           6        7         8          9
 Y                   10      15       20      27       31          35      30         35         40


      a) Compute the correlation co-efficient between X and Y.
      b) Obtain the equation of regression lines.
      c) Obtain an estimate of Y when X = 6.2


                                      Good Luck

				
DOCUMENT INFO
Shared By:
Stats:
views:2
posted:10/27/2011
language:English
pages:1
Description: newsletters, newspapers