Annamalai University December 2014 Question Paper B.Com.Business Statistics

Annamalai University december 2014 question paper
B.Com. DEGREE EXAMINATION December 2014
(SECOND YEAR)
(PART – IV)
231/620/630/610/250: BUSINESS STATISTICS
[Common with B.Com. (NR & OR), B.Com. MM (NR), B.Com. C.A. (NR), B.Com. D.D,
B.Com. A&F (NR & OR), B.Com. IB & B.B.S./B.Com. B.S. (NR & OR)]
Time: Three hours Maximum: 100 marks
 Answer any FIVE questions. (5 × 20 = 100)
1. Define statistics. Explain the scope of statistics in commerce.
2. Explain primary data and secondary data. State their relative merits and
demerits.
3. Describe various types of diagrams and there uses.
4. Find Mean, Median and Mode from the following data:
Class: 0-5 5-10 10-15 15-20 20-25 25-30
Frequency: 5 8 12 16 10 5
5. Find Karl Pearson’s Coefficient of skewness:
Variable : 10-20 20-30 30-40 40-50 50-60 60-70
Frequency : 10 16 30 40 26 18
6. Find the coefficient of correlation from the following data:
x: 21 22 23 24 25 26 27 28 29 30
y: 40 39 39 35 34 34 34 31 28 25
7. Estimate the population for 1965 from the following data:
Year : 1931 1941 1951 1961 1971
Population (000): 46 66 87 93 101
8. Find price index number from the following data by i) Laspeyre’s ii) Paasche’s
iii) Dorbish & Bowleys iv) Fisher’s method:
Commodities
A B C D
p q p q p q p q
Year 1998: 8 6 4 5 7 12 8 8
2000: 10 5 5 5 10 15 10 10
2
9. Fit a straight line by MLS. Also estimate sales for 2010:
Year : 1996 1997 1998 1999 2000 2001 2002 2003
Sales: 36 50 62 70 85 100 110 125
10. Define vital statistics write short notes on standardized birth rate and death
rate.
jkpHhf;fk; jkpHhf;fk; jkpHhf;fk;
 vitna vitnaDk; Ie;Jtpdhf;fSf;F tpdhf;fSf;F tpdhf;fSf;Ftpilaspf;ft[k;. tpilaspf;ft[k;. tpilaspf;ft[k;. (5 × 20 = 100)

1. g[s;spapay; tiuaW. tzpftpaypy; g[s;spapaypd; tiubay;iyia tpsf;Ff.
2. Kjy;epiy kw;Wk; ,uz;lhk; epiy g[s;sp tpguk; tpthpj;J mjd; ed;ik
jPikfisf; TWf.
3. gy;ntW tifahd tpsf;fg; gl';fs; kw;Wk; mtw;wpd; gad;fis tpthp.
4. gpd;tUk; tpgu';fspypUe;J ruhrhp/ ,ilepiy/ KfL fhz;f:
gphpt[ : 0-5 5-10 10-15 15-20 20-25 25-30
miybtz;: 5 8 12 16 10 5
5. fhh;y; gpah;rdpd; nfhl;lf; bfG fz;Lgpo:
khwp : 10-20 20-30 30-40 40-50 50-60 60-70
miybtz;: 10 16 30 40 26 18
6. gpd;tUk; tpgu';fspypUe;J xl;Lwt[f; bfG fz;Lgpo:
x: 21 22 23 24 25 26 27 28 29 30
y: 40 39 39 35 34 34 34 31 28 25
7. gpd;tUk; tpgu';fspypUe;J 1965-k; Mz;ow;fhd kf;fs; bjhifia fzf;fpL:
Mz;L : 1931 1941 1951 1961 1971
kf;fl;bjhif (000): 46 66 87 93 101
8. gpd;tUk; tpgu';fspypUe;J (1) yh!;gpah; Kiw (2) gh!;rP!; Kiw 3) lhh;gp!;
kw;Wk; bgsyp!; Kiw 4) ~gprhpd; Kiw _yk; tpiyf; FwpaPl;blz; fz;Lgpo:
bghUl;fs; A B C D
tpiy mst[ tpiy mst[ tpiy mst[ tpiy mst[
tUlk; 1998: 8 6 4 5 7 12 8 8
2000: 10 5 5 5 10 15 10 10
9. kPr;rpW th;f;fKiw _yk; neh;nfhL bghUj;Jf. nkYk; 2010k; Mz;ow;fhd
tpw;gidia kjpg;gpLf.
Mz;L: 1996 1997 1998 1999 2000 2001 2002 2003
tpw;gid: 36 50 62 70 85 100 110 125
10. gpwg;g[/ ,wg;g[ tpfpj';fs; tiuaW. jug;gLj;jg;gl;l gpwg;g[/ ,wg;g[ tpfpj';fs;
gw;wpa rpW Fwpg;g[ tiuf.
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