7. Give 5 types of information collected by surveillance system. TABLE 1 Original Enrolment Dead at Follow up 1970-1974 1981-1983 Diabetic men 185 96 Non diabetic men 3,141 800 Diabetic women 224 70 Non diabetic women Calculate the ratio of non-diabetic to diabetic men. Calculate the proportion of men in the follow up study who were diabetics. Calculate the proportion of deaths among men. 3821

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Average

In mathematics, everyone must have heard the term average in one place or other. Almost all types of calculation require taking out an average. In everyday life, the term is used for denoting a certain amount that can be said to be a typical quantity for multiple people or objects. In other words, if a group of people possesses a certain object, then the average gives us an idea regarding the quantity of the object possessed by each person. However, this is solely based on mathematical calculation. It is important to note that most people will not strictly have the average value in a group.