Some studies can be done well with relatively little money. For example, a marketing study simply trying to identify the average amount customers spend per transaction at an online retailer has a straightforward central question that doesn’t require many years of data collection. But it is much more expensive to conduct a longitudinal study like the Household, Income and Labour Dynamics in Australia Survey (HILDA), which looks at data for 25,000 people in Australia to find trends in economic well-being that can take a long time to develop. This requires lots of funding because
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mediumWhich choice most logically completes the text?
A
marketing studies are not likely to require data from very many individuals.
B
data from 25,000 people may not be enough to reveal significant trends in economic well-being.
C
long-term trends in economic well-being are hard to find without collecting data over many years.
D
long-term trends in marketing can be found without examining many years of data.