Answer:
The kind of data source is not know.
Explanation:
Data can be define as the quantitative or qualitative values of variable.
Data is thought to be the lowest unit of information from which other measurements and analysis can be done.
There are various method of interpreting data. Data sources are broadly divided into two;
1) primary data; primary source provides direct or firsthand evidence about an event.
2) secondary data; Secondary sources describe, discuss, interpret, comment upon, analyze, evaluate, summarize, and process primary sources.
Drawing a conclusion from data set not known might lead to wrong conclusion about the investment strategy to apply.