Chapter 1 Statistics Class 11 Notes
Important Notes of complete chapter 1 statistics class 11 notes written by Professor Mr. Faraz Qasir Suib. These notes are very helpful in the preparation of chapter 1 statistics class 11 notes for the students of the intermediate and these are according to the paper patterns of all Punjab boards.
Summary and Contents:
Topics which are discussed in the notes are given below:
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- Define statistics.
- Define population and sample.
- Write down characteristics of statistics.
- Define data.
- What is primary data?
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- Define secondary data.
- Sources of Primary data.
- Sources of secondary data.
- Describe any two uses of statistics
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- Define variable.
- What is constant?
- How many types of variable?
- Define discrete variable.
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- Define continuous variable.
- Define inferential statistics.
- Define descriptive statistics.
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- The word statistics was first used by a German scholar Gotifried Achenwall about the middle of the 18th century as the science of Statecraft concerning the collection and use of data by the state. According to another pioneer statistician Yule, the word statistics occurred at the earliest in the book "The elements of universal erudition" by Baron (1770).
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- It was used again with rather a wider definition in 1787 by E.A.W. Zimmermann in "A political survey of the present state of Europe". It appeared in Encyclopedia Britannica in 1797 and was used by Sir John Sinclair in Britain in a series of volumes published between 1791 and 1799 giving a statistical account of Scotland.
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- In the 19th century, the word statistics acquired a wider meaning, covering numerical data of almost any subject whatever and also interpretation of data through appropriate analysis. The word data is used for numerical facts and a single numerical fact is datum.
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Since early 1920's with the growth in the experimental sciences there was a need for reliable scientific methods for analyzing the results of experiments and surveys. The modern subject of statistics evolves with many of the early developers of statistical methodology being experimenters themselves with the incentive of their own practical problems. - These class 11 statistics chapter 1 questions and answers are perfect for quick revisions before your exams.
- Although the gathering and presenting of information is still an important part of statistics, the modern statistics is quite different from the early days. Statistics now-a-days includes probability theory and applied mathematics.
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- These days computers have made to perform statistical analysis routinely which could not have been contemplated in the past. Computers do not form a part of statistical theory but may be useful in applying statistical theory to solve a practical problem.
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- Statistics has been defined as the mathematical science of making decisions and drawing conclusions from data in situations of uncertainty. It includes designing of experiments, collection, organization, summarization, analysis and interpretation of numerical data.
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- In the above definition of statistics, we have only considered its scientific meaning. In day to day usage, the word statistics refers to numbers or facts, such as statistics of births, statistics of deaths and statistics of road accidents etc.
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- In some other situations, it has a symbolic meaning such as "do not become a statistics on the next weekend". The word statistics is also the plural of 'statistic' which is a statistical term and is a quantity calculated from the sample values.
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