1
Statistics as a Key Technology in
Real Life Applications
y A talk by
Professor S. K. Neogy
Indian Statistical Institute ...
2
The Statistical Mind
Statistics as a Key Technology
Prof. P. C. Mahalanobis
Founder, Indian Statistical Institute
3
Recognition of Statistics as a Key Discipline in India
y During the 1920s and until the mid-1930s, all or nearly all the...
4
The Statistical Mind
y Mahalanobis' influence was so pervasive that students of Physics
began to take interest in Statis...
5
The Statistical Mind
y What began as a small room in the Presidency College with a total
annual expenditure of less than...
6
Statistics :Science, technology or art ……..
1. Is statistics, as studied and practiced today, a
science, technology or a...
7
Statistics ……..
4. It is a technology in the sense that statistical
methodology can be built into any operating
system t...
8
Future of Statistics ……..
What is the future of statistics?
1. Statistics is now evolving as a meta-science.
2. Its obje...
9
Misconceptions and skepticisms about
statistics ……..
A health minister was looking at the statement in the
report submit...
10
Spreading statistical numeracy ……..
We learn the 3 R’s in the school - reading, writing and
arithmetic. These are not s...
11
Salt in statistics……..
There were communal riots in Delhi in 1947 immediately after
India achieved independence.
A larg...
12
Salt in statistics……..
Then the problem before the experts was
to estimate the number of persons inside a given area
wi...
13
Salt in statistics……..
Available data:
Bills submitted by the contractors to the government, which
gave the quantities ...
14
Salt in statistics……..
Let R, P and S represent the quantities of rice, pulses and salt
used per day to feed all the re...
15
Salt in statistics……..
It was found that
S/s had the smallest value and
R/r, the largest value indicating that the quan...
16
Statistics: a magic word ……..
Now statistics has become a magic word to give a
semblance of reality to statements we ma...
17
Statistics: a magic word ……..
y Statistics confirm that an intake of 500 mg of vitamin
C every day prolongs life by six...
18
Statistical Thinking & Quality of Life……..
Statistical Thinking is a philosophy of learning and action
based on the fol...
19
Statistical concepts and methods can play an important role
in resolving complex issues involved in civil cases like
di...
20
Past, Present and Future…….
y In the past, the economy of a country depended on
how well it was preparing for war.
y Th...
21
Our success …….
y Our success will depend on acquiring and processing
the information needed for optimum decision makin...
22
Finally…….
y In achieving this revolution,
Statistics would be the key technology,
a technology for shaping a new world...
23
References:
y P. C. Mahalanobis, Statistics as a Key Technology, The
American Statistician, Vol. 19, No. 2 (Apr., 1965)...
Upcoming SlideShare
Loading in...5
×

Wsdrajtalk202010

622

Published on

Presented at WSD at ramjas college on 20-10-2010

Published in: Technology, Economy & Finance
1 Comment
1 Like
Statistics
Notes
  • Statistics as the real based branch of mathematical science. So such programmes tie up the people to mathematics
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
No Downloads
Views
Total Views
622
On Slideshare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
3
Comments
1
Likes
1
Embeds 0
No embeds

No notes for slide

Wsdrajtalk202010

  1. 1. 1 Statistics as a Key Technology in Real Life Applications y A talk by Professor S. K. Neogy Indian Statistical Institute Delhi Centre On World Statistics Day at Ramjas College, University of Delhi October 20, 2010
  2. 2. 2 The Statistical Mind Statistics as a Key Technology Prof. P. C. Mahalanobis Founder, Indian Statistical Institute
  3. 3. 3 Recognition of Statistics as a Key Discipline in India y During the 1920s and until the mid-1930s, all or nearly all the statistical work done in India, was done single-handedly by Prof. Mahalanobis. y The early statistical studies included analyses of data on stature of Anglo-Indians, meteorological data, rainfall data, data on soil conditions, etc. y Some of the findings of these early studies were of great impact in the control of floods, development of agriculture, etc., and led to the recognition of Statistics as a key discipline.
  4. 4. 4 The Statistical Mind y Mahalanobis' influence was so pervasive that students of Physics began to take interest in Statistics. Several talented young scholars including J.M. Sengupta, H.C. Sinha, R.C. Bose, S.N. Roy, K.R. Nair, K. Kishen and C.R. Rao, joined to form an active group of statisticians. y Mahalanobis continued to be the nucleus. Theoretical research in Statistics began to flourish in the Institute. Research on large scale sample surveys won Mahalanobis a Fellowship of the Royal Society. Design and analysis of agricultural experiments also bloomed and led to some international contacts, notably with Sir Ronald A. Fisher.
  5. 5. 5 The Statistical Mind y What began as a small room in the Presidency College with a total annual expenditure of less than Rs. 250 in 1931, now comprises buildings on several acres of land in four major cities (Calcutta, New Delhi, Bangalore and Hyderabad)!
  6. 6. 6 Statistics :Science, technology or art …….. 1. Is statistics, as studied and practiced today, a science, technology or art? 2. Perhaps it is a combination of all these. 3. It is a science in the sense that it has an identity of its own with a large of techniques derived from some basic principles.
  7. 7. 7 Statistics …….. 4. It is a technology in the sense that statistical methodology can be built into any operating system to maintain a desired level and stability of performance 5. Statistics is also an art, because its methodology which depends on inductive reasoning is not fully codified or free from controversies. 6. Skill and experience of a statistician, which makes statistics an art.
  8. 8. 8 Future of Statistics …….. What is the future of statistics? 1. Statistics is now evolving as a meta-science. 2. Its object is the logic and the methodology of other sciences - the logic of decision making and the logic of experimenting in them. 3. The future of statistics lies in the proper communication of statistical ideas to research workers in other branches of learning.
  9. 9. 9 Misconceptions and skepticisms about statistics …….. A health minister was looking at the statement in the report submitted by a statistician that 3.2 persons out of 1000 suffering from a disease died during the last year. He asked his private secretary, an administrator, how 3.2 persons can die. The secretary replied, Sir, when a statistician says 3.2 persons died, he means that 3 persons actually died and 2 are at the point of death.
  10. 10. 10 Spreading statistical numeracy …….. We learn the 3 R’s in the school - reading, writing and arithmetic. These are not sufficient. There is a greater need to know how to handle uncertain situations. How do we take a decision when there is insufficient information? Attempts should be made to introduce the fourth R, reasoning under uncertainty, in the school curriculum at an early stage.
  11. 11. 11 Salt in statistics…….. There were communal riots in Delhi in 1947 immediately after India achieved independence. A large number of people of a minority community took refuge in the Red Fort which is a protected area The Government had the responsibility to feed these refugees
  12. 12. 12 Salt in statistics…….. Then the problem before the experts was to estimate the number of persons inside a given area without any prior information about the order of magnitude of the number, without having any opportunity to look at the concentrations of persons inside the area and without using any known sampling techniques for estimation or census methods.
  13. 13. 13 Salt in statistics…….. Available data: Bills submitted by the contractors to the government, which gave the quantities of various commodities such as rice, pulses and salt purchased by them to feed the refugees.
  14. 14. 14 Salt in statistics…….. Let R, P and S represent the quantities of rice, pulses and salt used per day to feed all the refugees. From consumption surveys, the per capita requirements of these commodities are known, say, r, p and s respectively. Then R/r, P/p and S/s would provide parallel (equally valid) estimates of the same number of persons.
  15. 15. 15 Salt in statistics…….. It was found that S/s had the smallest value and R/r, the largest value indicating that the quantity of rice, which is the most expensive commodity compared to salt, was probably exaggerated. The estimate S/s was proposed by the statisticians for the number of refugees in the Red Fort.
  16. 16. 16 Statistics: a magic word …….. Now statistics has become a magic word to give a semblance of reality to statements we make. y Statistics prove that cigarette smoking is bad. y According to statistics, males who remain unmarried die ten years younger. y Statistically speaking tall parents have tall children. y A statistical survey has revealed that a tablet of aspirin every alternate day reduces the risk of a second heart attack.
  17. 17. 17 Statistics: a magic word …….. y Statistics confirm that an intake of 500 mg of vitamin C every day prolongs life by six years. y A statistical survey has revealed that henpecked husbands have a greater chance of getting a heart attack.
  18. 18. 18 Statistical Thinking & Quality of Life…….. Statistical Thinking is a philosophy of learning and action based on the following fundamental principles: y All work occurs in a system of interconnected processes y Variation exists in all processes, and y Understanding and reducing variation are keys to success and improves quality of Life. y Statistical thinking will one day be as necessary for efficient citizenship as the ability to read and write
  19. 19. 19 Statistical concepts and methods can play an important role in resolving complex issues involved in civil cases like disputed paternity, alleged discrimination against minority groups in employment opportunities,and consumer protection against misleading advertisements. In all such cases, the arguments can be based on statistical data and their interpretation. Statistics and the Law……..
  20. 20. 20 Past, Present and Future……. y In the past, the economy of a country depended on how well it was preparing for war. y The biggest problem of the coming decades for any country is not the challenge of war but of peace.
  21. 21. 21 Our success ……. y Our success will depend on acquiring and processing the information needed for optimum decision making by which the available resources, both in men and material, are put to maximum use for improving the quality of life of individuals.
  22. 22. 22 Finally……. y In achieving this revolution, Statistics would be the key technology, a technology for shaping a new world through peace.
  23. 23. 23 References: y P. C. Mahalanobis, Statistics as a Key Technology, The American Statistician, Vol. 19, No. 2 (Apr., 1965), pp. 43-46 y C. R. Rao, STATISTICS AND TRUTH Putting Chance to Work (2nd ed.), World Scientific, 1997. y Richard Von Mises, Probability, statistics, and truth, Courier Dover Publications, 1981
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.

×