1 / 8

Objectives

This article discusses the different types of data (qualitative and quantitative) and provides a step-by-step guide on how to construct stem and leaf diagrams. It also explains the concept of grouped frequency distributions and cumulative frequency polygons.

kathrynjacobs
Télécharger la présentation

Objectives

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Objectives • Recognise types of data • Construct stemandleaf diagrams • Understand groupedfrequency distributions • Construct cumulativefrequency polygons

  2. Types of Data Qualitative Quantitative Height Town of birth Age Eye colour

  3. Types of Data Continuous Discrete Time Cost in £’s Volume Number of children Height Shoe size Weight Number of pets

  4. 1 2 3 4 1 2 3 4 6 7 8 0 2 3 5 7 7 7 8 9 1 2 3 5 7 0 1 1 8 means 18 Stem and Leaf Diagrams 35 23 18 25 20 16 22 27 33 41 27 37 17 25 27 29 28 31 32 40 35 23 8 6 7 3 5 0 2 7 7 7 9 8 5 3 7 1 2 1 0

  5. Stem and Leaf Diagrams 5.2 6.6 4.3 8.3 5.1 7.5 8.6 7.1 7.8 2.2 6.6 5.8 3.5 7.5 6.1 3.8 2.5 2.7 8.8 4.8

  6. Grouped frequency A sample of the red cell count per 1mg of blood from visits made to the doctor by 150 patients, assume data is continuous

  7. lower class boundary upper class boundary 5 9 4.5 9.5 lower class limit upper class limit class width Class 5 - 9 7 midpoint

  8. 175 150 125 100 75 50 25 4.5 9.5 14.5 19.5 24.5 29.5 34.5

More Related