Page 1 Statistical Tools used in Research Central University of Himachal Pradesh Page 2 Statistical Tools used in Research Central University of Himachal Pradesh Statistics Defined Correlation Hypothesis • Hypothesis : Alpha • Hypothesis : Beta Chi-Square Test of Independence Regression analysis Factor Analysis References Page 3 Statistical Tools used in Research Central University of Himachal Pradesh Statistics Defined Correlation Hypothesis • Hypothesis : Alpha • Hypothesis : Beta Chi-Square Test of Independence Regression analysis Factor Analysis References Statistics is the science and practice of developing human knowledge through the use of empirical data expressed in quantitative form. It is based on statistical theory which is a branch of applied mathematics. Within statistical theory, randomness and uncertainty are modelled by probability theory. (Wikipedia Encyclopaedia) Whatisstatistics? ? The collecting, summarizing, and analysing of data. ? The term also refers to raw numbers, or “stats”, and to the summarization of data. Example: Frequencies Page 4 Statistical Tools used in Research Central University of Himachal Pradesh Statistics Defined Correlation Hypothesis • Hypothesis : Alpha • Hypothesis : Beta Chi-Square Test of Independence Regression analysis Factor Analysis References Statistics is the science and practice of developing human knowledge through the use of empirical data expressed in quantitative form. It is based on statistical theory which is a branch of applied mathematics. Within statistical theory, randomness and uncertainty are modelled by probability theory. (Wikipedia Encyclopaedia) Whatisstatistics? ? The collecting, summarizing, and analysing of data. ? The term also refers to raw numbers, or “stats”, and to the summarization of data. Example: Frequencies Allows an examination of the relationship between variables; is there a relationship between these variables? Are they positively or negatively related? A correlation coefficient of 0 means that there is no relationship between the variables, -1 negative relationship, 1 positive relationship. Important: Correlation is not causation. •"Correlation Is Not Causation" ... which says that a correlation does not mean that one thing causes the other (there could be other reasons the data has a good correlation). Ex. What is the relationship between exercise and depression? •Does depression increase when exercise increases? •Does depression decrease when exercise increases? •Is there no significant correlation between exercise and depression? Page 5 Statistical Tools used in Research Central University of Himachal Pradesh Statistics Defined Correlation Hypothesis • Hypothesis : Alpha • Hypothesis : Beta Chi-Square Test of Independence Regression analysis Factor Analysis References Statistics is the science and practice of developing human knowledge through the use of empirical data expressed in quantitative form. It is based on statistical theory which is a branch of applied mathematics. Within statistical theory, randomness and uncertainty are modelled by probability theory. (Wikipedia Encyclopaedia) Whatisstatistics? ? The collecting, summarizing, and analysing of data. ? The term also refers to raw numbers, or “stats”, and to the summarization of data. Example: Frequencies Allows an examination of the relationship between variables; is there a relationship between these variables? Are they positively or negatively related? A correlation coefficient of 0 means that there is no relationship between the variables, -1 negative relationship, 1 positive relationship. Important: Correlation is not causation. •"Correlation Is Not Causation" ... which says that a correlation does not mean that one thing causes the other (there could be other reasons the data has a good correlation). Ex. What is the relationship between exercise and depression? •Does depression increase when exercise increases? •Does depression decrease when exercise increases? •Is there no significant correlation between exercise and depression? ? Correlation is Positive when the values increase together, and ? Correlation is Negative when one value decreases as the other increasesRead More

213 videos|199 docs|48 tests

### Chapter Notes - Use of Statistical Tools

- Doc | 1 pages
### Test: Use Of Statistical Tools

- Test | 10 ques | 10 min

- NCERT Textbook - Use of Statistical Tools
- Doc | 10 pages