The average value of the different phenomena interests mathematicians, specialists in statistics, businessmen and even — sports observers. In particular, post information on average age of players in each team on the football websites. Such data are obtained calculation of an arithmetic average.
Instruction
1. Define initial these tasks. Let five school students ate on change on several candies. It is necessary to find out how many on average sweets each child ate. The first had five candies, at the second — three, at the third — eight, at the fourth — seven, at the fifth — two.
2. Find the sum of all numbers. In the reviewed example it is necessary to calculate how many candies were eaten by all school students. Sum = 5 + 3 + 8 + 7 + 2 = 25 candies.
3. Divide result of the second step into quantity of composed. Arithmetic average = 25/5 = 5 candies.
4. For fixing of material solve one more problem. On Monday 112 people, on Tuesday — 123 persons, on Wednesday — 98, on Thursday — 150, on Friday — 114, on Saturday — 187, on Sunday — 210 came into office supply store. It is necessary to find average attendance of shop during the day.
5. As well as in the second step, summarize all numbers. Sum = 112 + 123 + 98 + 150 + 114 + 187 + 210 = 994 persons. So many visitors were in shop within one week.
6. Divide result of the fifth step into number composed, i.e. on the number of the considered days. Arithmetic average = 994/7 = 142 persons. It becomes clear that on average 142 persons a day come to shop.
7. For a training collect initial data and calculate average temperature in your area for the last month.