## Download Question Paper of "Business Statistics 2 B.Com" , Question Paper of B.Com 2nd Semester, Subject Code : BCOP-204, Paper ID B1120, Paper 4

• Tuesday, June 28, 2016

Roll  No.......................
Total  No.  of  Questions  :  07
B.Com.  (Sem.–2nd)
Subject  Code  :  BCOP-204
Paper  ID  :  [B1120]
Time  :  3  Hrs.
INSTRUCTION  TO  CANDIDATES  :
1. SECTION-A  is  COMPULSORY  consisting  of  TEN  questions  carrying TWO  marks  each.
2. SECTION-B  contains  SIX  questions carrying  TEN marks  each  and  students has  to  attempt  any  FOUR  questions.

SECTION-A

1)  (a)    Distinguish between primary dada and secondary data
(b)    What is an O give? How it is constructed.
(c)    Find out median from the following 5,7,9,12,10,8,7,15,21.
(d)    If the regression coefficients of X on Y is -1/6 and that of Y on X is -3/2, find
the value of correlation coefficient between X and Y
(e)      Write Components of  Time Series.
(f)      Find H.M from the following data X= 32 35 36 58 61 73.
(g)     Given sum of squares of items =2430 X=7 and N=12  Find the coefficient                     of variation.
(h)    What is the difference between correlation and regression?
(i)    Given to regression equation 8X-10Y+66=0 and 40X-18Y=214 Find X and Y
(j)    Calculate coefficient of correlation when Covariance of  X and Y is 488 and
Variance of  X is 824 and Variance of Y is 325.

Section –B

Q2.    From the following data calculate coefficient of correlation between the age of  Students and their playing habits.

Age(year)         15,          16,             17,     18,     19,     20.

No of Students 250,       200     150,   120,   100,   80.

Regular players  200,      150,   90,     48,     30,     12.

Q3.    Fit  a straight give trend to the following data:

Year                    1971    1972         1973      1974     1975

(production          20         24            16           20         28
In 600 tones)

Estimate the production for the year 1977

Q4     From the data given below find

(a)     Two regression equahans   (b) The most Likely marks in statistics ,When marks in  Economics are 30 (c) Also find coefficient of correlation between the two.

Marks in Economics25 28 35 32 31 36 29 38 34 32

Marks in Statistics   43 46 49 41 36 32 31 30 33 39

Q5.    The median and mode of the following wage distribution are known to be Rs. 33.5 and Rs.34 respectively. Three frequency values from the table are however missing. Find out  the missing frequencies when sum of frequencies is 230.
Wages(Rs.)     0-10,   10-20,  20-30, 30-40,   40-50,  50-60, 60-70

No of parsons    4,         16,    ---------, ----------, -------------, 6      4
Q6     Give the definition of statistics and discuss is scope and limitations.

Q7 (a) Calculate Bow ley’s coefficient of Shawnees from the following data:

Marks (below)     10,  20,   30,   40,     50,     60,

No of students      10, 30,   60, 110, 150,  180

(b)  Cellulite  S D  From the flowing

Marks (below)    20  40  60  80  100

No of Students    8    20  50  70  80