| |
Time: 16 hours
Level: Intermediate
| |
| |
 Introduction Resource- This unit is concerned with two main topics. In Section 1, you will learn about another kind of graphical display, the boxplot. Boxplots are particularly useful for assessing quickly the location, dispersion,...
| |
| |
- 1.1 Simple boxplots Resource
- It is a common observation that a data exploration should always begin by looking at a graphical display of the data. When looking at data sets which involve only one variable, displays such as bar charts...
- Activity 1.1 Resource
- Table 1.1 contains data on the percentage of silica found in 22 chondrite meteors. The data are given in order of increasing size.
- 1.2 Comparing data sets using boxplots Resource
- Boxplots are particularly useful for making quick comparisons. The following example relates to birth weights of infants exhibiting severe idiopathic respiratory distress syndrome (SIRDS), and the question...
- Activity 1.2 Resource
- The table below contains data on the sizes (numbers of children) of the completed families of two samples of mothers in Ontario. One sample of mothers had had fewer years of education than the...
- Summary of Section 1 Resource
- In this section you have been introduced to the boxplot. This is a graphic that represents the key features of a set of data. A typical boxplot is shown in Figure 1.8.
- Exercise on Section 1 Resource
- In a study of memory recall times, a series of stimulus words was shown to a subject on a computer screen. For each word, the subject was instructed to recall either a pleasant or an unpleasant memory...
| |
| | 2: Producing useful tables
- Data sets in different tabular forms Resource
- In much of your statistical work, you will begin with data set, often presented in the form of a table, and use the information in the table to produce diagrams and/or summary statistics that help in the...
- 2.1 Basic table layout Resource
- As Table 2.1 stands, it is hard to assimilate the information. Indeed it is not at all clear what any of the numbers mean. Even doing something as simple as giving the columns proper headings and drawing...
- Activity 2.1 Resource
- Do you think it would make sense to continue this process of simplification by pooling more rows? If so, which rows would you pool?
- 2.2 Including the results of useful calculation Resource
- Can Table 2.4 be simplified further by pooling more rows or columns? Perhaps it might be, but there may well be a risk of losing some important or relevant information. So, before considering any further...
- Early retirement from the National Health Service Resource
- A study was carried out to investigate various aspects of early retirement from the British National Health Service (NHS). In 1998–99, 5469 NHS employees from England and Wales were granted early retirement...
- Summary of Section 2 Resource
- In this section you have been introduced to some guidelines for presenting data in tables. These guidelines apply particularly when the data in a table are being used to illustrate a particular point or...
| |
| | 3: Interpreting data in table
- Health personnel in Thailand Resource
- In Section 2, the main concern was with producing a table of data, for others to read, that communicates clearly the important patterns or messages in the data. In this section, the focus changes slightly....
- Health care personnel in Thailand: activities Resource
- Would it be helpful, in considering possible changes in the way health care personnel are divided into the five categories listed, to recalculate the numbers in the body of Table 3.1 as percentages either...
- HIV testing in sub-Saharan Africa Resource
- In developed countries, the standard method for testing whether a person is infected with the virus HIV, that causes AIDS, is to carry out a blood test. Provided such a test is carried out long enough...
- Guidelines for graphics Resource
- Data in the form of counts of individual entities (for example, people, animals, power stations) in a small set of discrete categories can be presented in bar charts or pie charts. For most purposes, bar...
- The British Crime Survey Resource
- The British Crime Survey (BCS) is a sample survey carried out in England and Wales by the Home Office. The survey was first carried out in 1982, and at the time of writing (2001) is done every two years....
- Summary of Section 3 Resource
- In this section, you have learned about appropriate ways of interpreting data in tables. By working through examples, you have seen how it can be useful to calculate appropriate proportions and ratios,...
| |
| |
- Summary of Unit A2 Resource
- In this unit, you have learned about boxplots and about ways of dealing with data given in tabular form.
| |
| | References and Acknowledgements | |
OPML Feed |
Contact OpenLearn |
Privacy |
Copyright |
Accessibility
Share on Facebook
Save to Del.icio.us
Stumble it!
Add to Onlywire
