What percentage are there in daily life?

1, the weather forecast program on TV will report the weather and precipitation probability that night and tomorrow.

The probability of precipitation tonight is 20%.

2. Macro description of the experimental subjects when releasing the survey results.

For example, an experiment concluded that the IQ of people who often read short messages would drop 10%.

3. Used when calculating interest, tax and profit.

For example, the announcement issued by the central bank shows that since1October 24, the interest rates of RMB loans and deposits of financial institutions have been further lowered by 0.25 percentage points, 65,438. Among them, the one-year loan benchmark interest rate was lowered by 0.25 percentage point to 4.35%, and the one-year deposit interest rate was lowered by 0.25 percentage point to 1.5%.

4, said something has the ability of a certain property or the probability of a certain property.

For example, oil yield = oil quality/total physical quality × 100%, and germination rate = germination number/total number of seeds × 100%.

5. Indicates the wool content of clothes.

For example, sweaters contain 70% wool, 30% chemical fiber, cotton-padded jacket contains 88% cotton, 3% spandex, 9% polyester, fruit juice contains 80% fruit and 20% other compounds.

Extended data:

Common fallacies:

1 and percentage are often proportional, but sometimes the percentage can exceed 100%.

For example, 20 13, the growth rate of WeChat usage reached 203%.

2. The nutritional reference value in the nutrient composition table on the food packaging box does not refer to the percentage of the substance in the food, but refers to the ratio of the content of the substance in the food to the average daily intake, which also explains why the sum of the percentages in the nutrient composition table is often not equal to 100%.

For example, if a normal person consumes 60 grams of fat every day, then a food containing 6 grams of fat per 100 grams should be marked as 10% instead of 6% in the nutrient composition table.

3. The percentage of individuals such as survival rate, germination rate, attendance rate, oil yield and scoring rate in the total amount will not exceed 100% (maximum 100%).

4. Percentage has different meanings in different situations. For example, the phrase "the probability of rain tonight is 20%" means that the probability of rain (snow) tonight is 20%, but it doesn't mean that it will rain (snow) 20% of the time tonight.

Baidu Encyclopedia-Percentage