(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! ! ! ! !