Class ix cbse mathematics statistics.pptx

Statistics

1. Data is defined as  facts or figures, or information collected Raw data is data that has not been processed for use Primary data Data which is collected by the investigator himself/herself secondary data is the data that has already been collected through primary sources and made readily available for the investigator Unorganized Data Data which is not arrange in a systematic way. Organized Data Data which is arrange in a systematic way.

2. 1.Arrange in ascending or descending order 2. Frequency distribution table

3. 3. Grouped Frequency Distribution table

4. Class Upper limit lower limit Class size/width

5. Thank you