Bar graph : In first 5matches she took 0witch in each match , next 7 matches she took 1wicket each match...
i. e, 1st match -->0wicket
2nd match --->0wicket
..
6th match --->1wicket
7th match -->1wicket
…
13th match --->2wicket
14th match --->2wicket ..and so on
Now, total number of matches =5+7+8+25+20+17+8+4+3+2+1=100
Median =wicket in 100/2th match +100+1/2th match......
50th +51th match wickets
In, 50th match ---->4wickets
51th match ---->4wickets
So, median =4+4/2=4