(1) A: I think this way of purchasing goods is reasonable, because it can meet the needs of more people.
(2) Answer: My suggestion is: You can buy less shoes of size 35 and more shoes of size 36.37.
(3) The shoe store used the knowledge of mode when determining the purchase quantity.
Page P 1 13
4.( 1) Average value: (9.8+9.7x2+9.6x4+9.5+9.4x2+9.1) divided by1is about 9.55.
Median: 9.6 Mode: 9.6
(2)(9.7x2+9.6x4+9.5+9.4x2) divided by 9 is about 9.57 (minutes).
A: I think it makes sense, because 9. 1 and 9.8 are extreme data. If they are removed, the average will not be affected by extreme data.
5. The first-1 and 2
The second -3
The third-no connection.
Four-four and five.
Fifth-fifth
6. A: Team B is likely to win, because the performance of Team B is getting better and better, which means that their state is getting better and better, so I estimate that Team B is more likely to win.
7. Divide the turntable into eight parts, one for dancing, two for recitation and five for singing.
I hope you can be satisfied! ! ! ! !