Hi there,
I have a dataset showing the exchange rate of the Australian Dollar versus the US dollar once a day over a period of about 20 years. I have the data in a data frame, with the first column being the date, and the second column being the exchange rate. Here's a sample from the data:
>data
V1 V2
1 12/12/1983 0.9175
2 13/12/1983 0.9010
3 14/12/1983 0.9000
4 15/12/1983 0.8978
5 16/12/1983 0.8928
6 19/12/1983 0.8770
7 20/12/1983 0.8795
8 21/12/1983 0.8905
9 22/12/1983 0.9005
10 23/12/1983 0.9005
How would I go about displaying the top n% of these records? E.g. say I want to see the days and exchange rates for those days where the exchange rate falls in the top 5% of all exchange rates in the dataset?