(2) As can be seen from the statistical chart, the overall sales trend increased last week;

(3) As can be seen from the statistical chart, the sales volume was the lowest last Tuesday, so it is estimated that the sales volume is also the lowest this Tuesday. In order to reduce the impact on sales, it is more appropriate to choose a vacation on Tuesday;

(4) As can be seen from the statistical chart, the sales on Saturday and Sunday are more, which may be because there is no need to go to work on weekends and there is more time for shopping;

(5) According to the sales of 135 pieces of clothing last Thursday, it can be predicted that the sales of clothing this Thursday will be about 135 pieces.