Statistical Table & Statistical Graph. Zhang Guozhen School of Public Health Xinjiang Medical University. Statistical Tables and Graphs. Statistical description is a kind of fundamental work for statistical inference, which describes the feature of the sample.
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School of Public Health
Xinjiang Medical University
Example1 125 children were tested in county B and 9 cases were found In this study, 221 children were tested in county A and 4 cases were found suffering from rachitis; the prevalence rate was 18.10 per thousand.; the prevalence rate was 72.00 per thousand. 248 children were tested in county C and 2 cases were found; the prevalence rate was 8.00 per thousand…..
Table 1 Rachiotis prevalence rates in 5 counties
and the mark “ ” usually put on the bottom of
Table 1 Table title
The mental score and other factors related to coronary heart disease were researched in certain area. The results were shown in table 5
Solution：dividing it into two tables, table 6,7
Mix of important and many non-important ones
Total and subtotals; Digits and decimals
bar graph, histogram, percent bar chart,
pie chart, line graph, scatter plot ,statistical map, stem-leaf plot, box plot, residual plot
below the graph
Vertical item (unit)
Horizontal item (unit)
Fig 1 The basic structure of a statistical graph
Bar chart is selected because the cause of death is interdependent indexes. Simple bar chart , only classified by the cause of death .
Fig.5 Percentages of the reasons for re-addiction (xx place,1996)
A pie chart is good for making relative comparisons among pieces of a whole.
Compare frequencies of a category variable
Fig. 6 Mother’s education manner in group of drug addicts and group of controls. (xx place, 1996)
Describe the changing of Y with X (time) -- tendency
Fig. 7 Incidence rates of stomach cancer in a city
Left: The absolute difference of mortality rates ~ Year
Right: The absolute difference of log (mortality rate)
Suitable line graphs in different situation
in the interval
Describe the relationship between two numerical variables.
Is the relationship linear or non-linear?