Twitter's Rapid Rise Has Allowed It to Attract Enough Startup

question 116

Multiple Choice

Twitter's rapid rise has allowed it to attract enough startup capital to enable it to approach revenue gradually and with caution, in the hopes that:

• A) it will fetch the firm a higher-than-market-value evaluation.
• B) it won't alienate users with too much advertising.
• C) it does not attract the attention to its model from rival microblogging services.
• D) it does not turn into a resource hogging black hole like YouTube is proving to be for Google.
• E) free riders do not hijack the service to feed off its profits.

Comprehend the concept of ecological fallacy and its impact on epidemiological inference.

Recognize the importance of using multiple controls in case-control studies to reduce biases.

Describe the study design and purpose of case reports and case series in early identification of diseases or conditions.

Understand the methodology and applications of cross-sectional studies in epidemiology.