93×3×2 = 558 (points)-this is twice the total score of English language.
90.5×2×2 = 362 (dots)-this is twice the total number of words.
(558-362)÷ 2 = 196÷2 = 98 (points)-this is an English score.
97×2-98 = 96 (points)-this is a math score.
90.5×2-96 = 85 (points)-this is the score of China people.
A: He scored 85 points in Chinese, 96 points in mathematics and 98 points in English in three subjects.
Average is an important concept in statistics. The average in primary school mathematics generally refers to the arithmetic average, that is, the quotient obtained by dividing the sum of a set of data by the number of this set of data. In statistics, arithmetic mean is often used to represent the overall level of statistical objects, and it is a statistic that describes the position in the data set.
It can be used not only to reflect the general situation and average level of a group of data, but also to compare the data of different groups and see the differences between groups. It is intuitive and concise to represent a set of data by average, so it is often used in daily life, such as average speed, average height, average yield, average score and so on.