Question

A student finds data on an internet site that contains financial information about selected companies. he plans to analyze the data and use the results to develop a stock investment strategy. what kind of data source is he​ using? what concerns might you have about drawing conclusions from this data​ set? what kind of data source is he​ using? choose the correct answer below.

a. they are a representative sample of companies.
b. they are from a designed experiment.
c. they are from a survey.
d. the kind of data source is not known.

Answer 1

The kind of data source is not known. Results may be invalid because some internet websites don’t upgrade their formats to the latest one. A lot of important details may also be missing from internet sites since some of their formats are incorrect while their data cannot be used as resource in some statistic software.