9) Based on a survey of 4113 U.S. adults, researchers at Stanford University con
ID: 3056319 • Letter: 9
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9) Based on a survey of 4113 U.S. adults, researchers at Stanford University concluded that Internet use leads to increased social isolation. The survey was conducted by an Internet-based polling company that selected its samples from a pool of 35,000 potential respondents, all of whom had been given free Internet access and Web TV hardware in exchange for agreeing to regularly participate in surveys conducted by the polling company. Two criticisms of this study were expressed in an article that appeared in the San Luis Obispo Tribune (February 28, 2000). The first criticism was that increased social isolation was measured by asking respondents if they were talking less to family and friends on the phone. The second criticism was that the sample was selected only from a group that was induced to participate by the offer of free Internet service, yet the results were generalized to all U.S. adults. Each of these criticisms is describing a type of bias. For each one, indicate what type of bias is being described and why it might make you question the conclusion drawn by the researchers. 3 13 View as TextExplanation / Answer
Sample planning and sampling methodology are key skills nof the marketing research. Once the researcher has clearly specified the problem and developed an appropriate research design and data collection instruments,the next step in the research process is to select those elements from which the information will be collected.
Sampling methods are classified as either probability or non probability. Probability sampling method is one where samples in which every element of the population is known.
Non probability sampling method is one where the samples in which specific elements from the population have been selected.
From our data the researcher using non probability sampling for investigation.
The survey was conducted , number of samples from a pool of 35000.
The two test cases are:
If they are busy with internet sources, whether they are spending time with their friends or family members or not. This type of sampling is called judgement sampling in which the researcher selects the sample based on judgement.
The second statement is , if we provide free internet to the participants, whether they will spent time with their friends or family members. This type of sampling is called Panel sampling , in this method of sampling , same units or elements are measured on subsequent occasions. In some types of research studies, there may be a necessity to contact the same unit or element after some time to have a comparison between two sampling plans.
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