Ratios and Proportions

We use ratios to compare two things. To use words to express ratios, use the word "to". For example "In the figure below, the ratio of square to triangle" is said. The ratio can be written in several different ways

Multiplication or division of each term by the same nonzero number yields the same ratio. For example, ratio 2: 4 is the same as ratio 1: 2. To determine if the two ratios are equal, divide by using the calculator. If the division gives the same answer to the two ratios, they are equal

Platinum argues that the ratio or ratio of visible light split (AB: BC) to understandable split (CD: DE) is the same as the understandable visible light (AC: CE) ratio or ratio , BC = CD. In fact, Plato decided the content of these two parts at some point. He said that on the (510 B) CD, the soul was forced to investigate by considering what was imitated in the previous department (BC) as an image.

"Adjust" the ratio using 2 multiplication or division. A common type of problem with ratios involves using ratios to scale up or down two numbers. The ratio of all items that multiplies or divides a ratio by the same numerical value is the same as the original scale. Therefore, to scale the ratio, multiply or divide by the scale factor.

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A number is a representation of amplitude. They are easier to compare, but the ratios of numbers are basically the same as quantities, as the ratio is usually similarity between ratios. Therefore, as a specific case, a certain percentage of the numerical value is included in the absolute value ratio.

Percentage, percentage, ratio, and ratio are used to describe the nominal data. Scale is defined as the number of observations with given characteristics divided by the total number of observations. When evaluating the success rate of extubation of a patient wearing a ventilator, the percentage of patients successfully extruded is as follows. The probability that an event occurs (see Chapter 1) is an example of proportional. The rate is defined as the ratio expressed per unit time multiplied by a specific "concentration". For example, if it is known that the proportion of male angina patients suffering from acute myocardial infarction is 0.05 (ie, 5 per 100 patients) per year, The incidence of myocardial infarction in patients with disease is 500 per 100,000 people per year. The charge will be explained further in the next chapter.