Download SGBAU (Sant Gadge Baba Amravati university) BSc 2019 Summer (Bachelor of Science) 3rd Sem Statistics Previous Question Paper
8.80. Part-Il (Scmester?lll) Examination
3S : STATISTICS
Time : 'l?hree Hours] [Maximum Marks : 80
Note :? ALL questions are compulsory.
l. (A) Fill in the blanks : 2
(i) Testing of hypothesis is a decision problem.
(ii) In r x 5 contingency table, d.f. is ,
(iii) A method of ?sample study? relating to population is known as
(iv) 'l?hc study of birth, death, migration etc. is called
(B) Choose the correct allcmulive : 2
(i) ?Testing of hypothesis" was initiated by :
(a) Karl Pearson (b) R.A. Fisher
(0) J. Ncyman ((1) (IR. Ruo
(ii) Chi-squarc test is also called as :
(a) Normal test (b) Parametric test
(c) Non-paramclric test (d) Two tailed tcsl
(iii) Generally census in every country is conducted after ____ years.
(a) Three (b) Five
(c) Ten (d) Fifteen
(iv) In life table terminology qx : i77___
(:1) 3+1 (b) 13x + l ? ?x
[X
(c) Ix + 1 - 1x (d) 9?9
[X
(C) Answer in ONE senlcncc catch : 4
(i) What is meant by vital event ?
(ii) Dc?nc parameters of population.
(iii) Who proposed the chi-square ?cst for testing the goodness of ?t ?
(iv) What is 'l'x, in life table terminology ?
2. (A) Explain in brief, present statistical system in India. 4
(B) State the important publications of banking and ?nance. 4
(C) Describe Dc 111cm method of census with its advantages and disadvantages. 4
OR
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3. (1?) What do you mean by ulllciul statistics ?7 4
(Q) Explain the functions of (SO. 4
(R) Name the publication 01' agricultural statistics. 4
4. (A) [)c?nt: \ilal slulislics. lixpsuin rcgislrution method 01' obtaining Vital statistics with its
demerits. 6
(B) What do you mum h}
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5. (P) What are \??l'ium mcasurcs of mortality 1? Explain CDR with its merits and demerits.
6
(Q) [Explain speci?c dcatl' rum; and de?ne age SDR with its merits and dcmcrils. 6
6. (A) What arc the assumptions in Ihc construction 01' life table ?.7 Give the uses of life
lublc. 6
(B) What are diffcrcnl mcusunrs of fertility '? Explain age SFR with its merits. 6
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7. (P?) Prove that. in life table terminology : 6
(i) nP?=P?-}? -F
\v \u_? _..?. ,
l."
(ii) 6 z Z/xvn _\.
-" a
n=| ?V
(Q) Explain N.R.R. m dcluin \Khy N.ILR. is called us rate 01' replenishment of
population ? 6
8. (A) What do you mean by estimation ?? Give the requisites of good estimator. 4
(B) Dcscrbc unbiuscd cslimuuvr with example. 4
(C) Distinguish between point estimation and interval estimation of a parameter. 4
OR
9. (1?) Explain simplc .md cumm silcs hypothesis With example. 4
(Q) Explain Type-I :md Tj'pc-l' error. 4
(R) Explain steps involved in Lesting of hypothesis. 4
10. (A) l'ixplain the concept ?21? random sample. 4
(B) Obtain sampling. distribuliun 01~ sum of Binomial vurialc. 4
(C) Describe the steps for drawing a random sample from normal distribution. 4
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11. (P) Explain the term statistic and its sampling distribution. 4
(0) Obtain sampling distribution of sum of Poisson variate.
(R) Give the procedure of drawing a random sample from Binomial distribution.
12. (A) De?ne chi-square variate with 'n? degrees of freedom and obtain its m.g.f.
##4##:-
(B) State and prove additive property of chi-squarc varialc.
(C) Explain Yate?s correction factor in 2 x 2 contingency table and give corrccted
chi-squarc. 4
OR
13. (P) State the conditions for validity of chi-square test. 4
(Q) Explain chi-square test for testing goodness of ?t. 4
. a b
(R) In 2 X 2 contingency table d show that :
c
X2 __ N(ad ? bc)2 4
(a+b)(c+d)(a+c)(_b+d)'
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This post was last modified on 10 February 2020