pandas DataFrame objects also have a number of helpful methods. In the cell below, look up the following information specified in the comment of each cell below. Each cell should have code that looks like df. method () , where method () is replaced by the method that returns the information in the comment. Note that some methods will also need information within the parentheses following the method name (i.e. df. method ( arg=val) and others may require you to specify the series on which you want to operate (i.e. df ['series'].method ( )) in the first cell below, see the first 5 rows of df. in the second cell below, determine which different months are included in df. in the third cell below, determine how many different months are included in df. in the fourth cell below, determine how many times each month shows up in df. in the fifth cell below, calculate basic summary statistics on New registered voters. ]: #re ] : [i ]: \# your code here raise NotImplementedError ]: #r]:71