Question
Why is sampling an essential technique in data
analysis?Solution
Sampling is a fundamental technique in data analysis because it allows analysts to work with a subset of data that represents the entire population, significantly reducing the time, cost, and complexity associated with collecting and analyzing complete datasets. Instead of gathering data from every single individual in a large population, which could be prohibitively expensive and time-consuming, analysts can collect a smaller, manageable sample. When properly done, this sample can provide accurate insights into the larger population, making it a powerful tool for inference and decision-making. Sampling is especially useful when data collection for the entire population is impractical or impossible, or when quick results are needed. The other options are incorrect because: • Option 1 (Accurate representation) is not always guaranteed by sampling. Sampling can provide a representative estimate but may still involve some level of error or bias. • Option 3 (Precise results without error) is misleading as sampling always introduces some degree of sampling error. • Option 4 (Eliminating data cleaning) is not a benefit of sampling. Even with a sample, data cleaning is still necessary. • Option 5 (Including all data points) contradicts the essence of sampling, which uses only a subset of the data.
The demand for which the product is not available or is not developed till now, is known as _______ demand.
Observing people and asking them questions are two ways to obtain:
Facebook had slightly over __________ unique U.S. visitors per day by September 2011.
How a person establishes expectations for a service they have never purchased but plan to purchase is influenced by each of the following EXCEPT:
_____________ marketing concept focuses on delivering customer satisfaction along with improving the consumer's and the society's well-being.
At which step of the planning stage of the strategic marketing process does a firm develop the program's marketing mix?
Social media deliberately seek to ensure that the message does not end with an individual receiver. Social media seek to reach __________.
Which survey type is usually biased because those likely to respond have had especially positive or negative experiences with a given product, service, ...
Which type of store gives shoppers the greatest variety of merchandise?
All of the following examples a consumer might have difficulty separating the deliverer of the service from the service itself, except: