Then the proportion of people participating in calligraphy =125500 = 25%;
Composition participants = 500× 30% =150;
The proportion of people who participated in handwritten newspapers =100500 = 20%;
The number of participants in the textbook drama = 500-50-125-150-100 = 75, accounting for 75,500 =15%;
(2) The statistical chart drawn is as follows:
.
(3) Incorrect.
The winning rate of participating in speech =550= 10%, and the winning rate of participating in handwritten newspaper =8 100=8%.
Therefore, it is incorrect to say that the award-winning rate of speeches is lower than that of handwritten newspapers.