How to Display Data- P8 ppt

... the number of data points in each stem can also be displayed on the left. It is easiest to understand by means of an example. 30 How to Display Data Table 4.1 Number of deaths from SIDS per ... method to display them is using a bar chart. As with categorical data, an initial step is to add up the number of observations in each category and express them as per- centages of t...

Ngày tải lên: 04/07/2014, 09:20

... skills and knowledge to display your data appropriately. • In addition, you will be able to distinguish between bad graphs and good graphs and know how to transform the former into the latter and ... 2003. 7 Huff D. How to lie with statistics. London: Penguin Books; 1991. 9 Chapter 2 How to display data badly 2.1 Introduction There are a great many ways in which data can...

Ngày tải lên: 04/07/2014, 09:20

... (7.8%) Forceps delivery (2.8%) Ventouse (6.5%) Vaginal breech delivery (0.5%) 20 How to Display Data Generally pie charts are to be avoided, as they can be diffi cult to interpret particularly when ... (6.5%) Vaginal breech delivery (0.5%) 18 How to Display Data represents an individual category. The area displayed for each category is pro- portional to the number in that...

Ngày tải lên: 04/07/2014, 09:20

... In this, the correlation coeffi cients are shown in a triangular display similar to the charts in road atlases showing the distances between pairs of towns. The graphical equivalent, in Figure ... point by point. In order to fi t a Lowess curve it is necessary to specify the amount of data used in each localised subset (bandwidth) and the weight to be given to each point fi tted...

Ngày tải lên: 04/07/2014, 09:20

... medical research. Chichester: Wiley; 2005. 58 How to Display Data Relationship between two continuous variables 57 • If it is necessary to display the correlation between all pairs of a set ... Wherever possible the regression line should be shown in a plot together with the scatter diagram of the raw data with the predictor (explanatory) variable on the X-axis and the dependen...

Ngày tải lên: 04/07/2014, 09:20

... 78 How to Display Data the mean pain scores together with solid lines. One other important feature of this graph is the exclusion of confi dence intervals for the means at each time period. To ... would be to imply that it is appropriate to compare the groups at each time point. As it is inappropriate to perform a signifi - cance test at each time period, so it is inappropriat...

Ngày tải lên: 04/07/2014, 09:20

... 1979. 1 88 How to Display Data Appendix Table A7.1 CONSORT checklist of items to include when reporting a randomised trial 9 Item No. Descriptor Title and abstract 1 How patients were allocated to ... J., Personal Communication, 2006). The scatter plot seems to show a generally increasing trend, with more scatter towards the end. However, fi tting a lowess smoothing curve wi...

Ngày tải lên: 04/07/2014, 09:20

... 103 pie chart 17–20 categorical data 17 count data 31 plotting data 7 poorly displayed data see badly displayed data predictor variable 48 presentation of data see data presentation presentations ... 90–1 gridlines 4, 6, 59 grouping text 101–2 health-related quality of life (HRQoL) measures 63 histogram 35–40 advantage 37 categories 35 interquartile range 40 Kaplan–Meier survival plot 93 l...

Ngày tải lên: 04/07/2014, 09:20

... on how to draw fi gures and display data. The purpose of this book is to give advice on the best methods to display data which have arisen from a variety of different sources. We have tried to ... as it is easier to scan down a column than across a row. 4 However, it Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com 24 How to Display Data be t...

Ngày tải lên: 27/06/2014, 06:20

... Publishing Ltd, 9600 Garsington Road, Oxford OX4 2DQ, UK Blackwell Publishing Asia Pty Ltd, 550 Swanston Street, Carlton, Victoria 3053, Australia The right of the Author to be identifi ed as the ... Chennai, India Printed and bound in Singapore by Utopia Press Pte Ltd Commissioning Editor: Mary Banks Editorial Assistant: Victoria Pittman Development Editor: Simone Dudziak Production Control...

Ngày tải lên: 04/07/2014, 09:20