## Wednesday, August 31, 2016

• Wednesday, August 31, 2016

Roll No.
Total No. of Questions : 07
BBA (Sem.–3rd)
Subject Code : BB-304
Paper ID : [C0216]
Time : 3 Hrs.
INSTRUCTION TO CANDIDATES :
1. Section –A, is Compulsory.
2. Attempt any four questions from Section-B.

Section –A

Q. 1. (a) Difference between questionnaire and schedule.
(b) Secondary data
(c) Mutually exclusive events.
(d) Mean of 50 terms was calculated as 30.2. Later on it was known that without increasing the number of terms, one term with the value of 36 was included twice. Find correct mean.

(e) Explain chain base index numbers.
(f) Mean deviation
(g) Calculate median 2, 7, 9, 1, 5, 6, 12, 3, 7, 8
(h) Define Average
(i) Write the characteristics of a god measure of Dispersion.
(j) From a pack of 52 cards two cards are drawn at random, find probability of getting a queen of black colour.
Unit-I
Q. 2. First and third Quartile of Data are 12.5 and 25 for the following series. Find missing
frequencies=72
 Class Intervals 0-5 5-10 10-15 15-20 20-25 25-30 30-35 35-40 Frequency 4 8 ? 19 ? 10 5 ?

Q. 3. “Despite many drawbacks standard deviation is the best measure of dispersion” Discus?
Unit-II
Q. 4. Two random variables have regression equation as
3x-2y-26=0 and 6x+y-31=0
Calculate mean values and correlation coefficient. If variance of X is 25 find standard deviation  Y
Q. 5. (a) Briefly explain diagrammatic and graphic method of studying correlation.
(b) Explain
(i) Coefficient of determination
(i) Coefficient of alienation
Unit-III
Q. 6. Calculate the trend values by least square method and predict he sales for 1982 taking

 Years 1973 1947 1975 1976 1977 1978 1979 Sales 20 23 22 25 26 29 30

Q. 7. “Fisher’s ideal index number is a compromise between the two well known indices – not a right compromise, economically speaking”. Discus.
Unit-IV
Q. 8. The distribution of typing mistakes committed by a typist is:)

 Mistakes 0 1 2 3 5 No. Of pages 14 14 39 27 5
Fit a poison distribution.
Q. 9. (a) There are 4 red and 5 green balls in a bag. If two balls are drawn one after the other at random without replacement, what is the probability that first one is red and second one is green bal?
(b) Write a note on:

(i) multiplication theorem of probability.