Question on skew only when collecting histograms

I have a table with a column that contains only two distinct values..
country_ID COUNT(*)
12 645
16 1032
1 2336096
Here i tried collecting the statistics on this table using the following statements:
exec dbms_stats.gather_Table_stats(ownname=>'VISHNU',tabname=>'TEMP1',estimate_percent=>100,degree=>16,method_opt=>'for columns size skewonly');
select table_name,column_name,LAST_ANALYZED,NUM_BUCKETS from dba_tab_col_statistics where owner='VISHNU' and table_name='TEMP1'
Here the data appears to be highly skewed an even after trying to specify METHOD_OPT the histograms are not collected on any of the columns in the table.
Is this the default behavior or my understanding of the histograms **For columns size skewonly** or skewness is completly wrong.
can any one please help me in this...
thanks,
Violet...

And one more thing the table doesnot contain any indexes. and moreover the histograms are not being collected.
When i use skew only the histograms are collected on all the columns
exec dbms_stats.gather_Table_stats (ownname=>'VISHNU',tabname=>'TEMP',estimate_percent=>100,degree=>16,method_opt=>'FOR ALL COLUMNS SIZE SKEWONLY');
When i use the AUTO no histograms are collected.
exec dbms_stats.gather_Table_stats (ownname=>'VISHNU',tabname=>'TEMP',estimate_percent=>100,degree=>16,method_opt=>'FOR ALL COLUMNS SIZE AUTO');
This raises the question... if we specify skew only then does oracle considers that all the columns are SKEW..
Thanks,
Violet...

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