Traditional Culture Encyclopedia - Weather forecast - Xiao Ming is a "little guardian of environmental protection". After class, he often cares about the changes in the environment and weather. Recently, he learned the average temperature during the day

Xiao Ming is a "little guardian of environmental protection". After class, he often cares about the changes in the environment and weather. Recently, he learned the average temperature during the day

Xiao Ming is a "little guardian of environmental protection". After class, he often cares about the changes in the environment and weather. Recently, he learned the average temperature during the day last week, as shown in the following table (+). (1) The average temperature on Saturday is the highest, which is16.9+1.4 =18.3℃;

(2)∵( 1. 1-0.3+0.2+0.4+ 1+ 1.4-0.3)÷7=0.5

∴ 16.9+0.5= 17.4

(3) Because the local average temperature is 17.2℃ and the lowest temperature is 4.2℃,

So the local temperature difference has not changed much.