These following charts are the data that I got. In the first chart , males and females were estimating the height of a cup, the actual size of the cup is 10.5cm, females estimating data is closer than males, so of cup, they have an accuracy estimating. In the second chart, the object is a cell phone, the actual size of the cellphone is 13.5cm, females show their better ability again---- the data told us females estimating size is closer than males. In the third chart, the object is a book, the actual size of the book is 29.5cm, the estimating size of female is close to the actual size. Now the result is clearly, females have a better ability of estimating things for three experiments all support that females have a better ability of estimating size.