To create an empty Series object, you can use :

1. pd.Series(empty)
2. pd.Series(np.NaN)
3. pd.Series( )
4. all of these

To specify datatype int16 for a Series object, you can write :

1. pd.Series(data = array, dtype = int16)
2. pd.Series(data = array, dtype = numpy.int16)
3. pd.Series(data = array.dtype = pandas.int16)
4. all of the above

To get the size of the datatype of the items in Series object, you can display …………… attribute.

1. index
2. size
3. itemsize
4. ndim

To get the number of elements in a Series object, …………… attribute may be used.

1. index
2. size
3. itemsize
4. ndim