A researcher wants to conduct a study measuring factors that affect a healthy li
ID: 3074437 • Letter: A
Question
A researcher wants to conduct a study measuring factors that affect a healthy lifestyle among US residents, with study variables assessing daily diet, amount exercise per week and how many times per week an individual consumes fast food. The researcher decides to recruit a sample of participants to collect data from by standing outside a gym in a suburb of Los Angeles and asking people passing by if they would be willing to participate in her study and complete her developed questionnaire.
Would her chosen method of sampling be the best way to obtain a representative sample of her target population of all US residents?
No -- her chosen method would NOT be the best way of obtaining a representative sample of US residents.
Which frequency distributions are NOT appropriate to use with nominal data?
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Researchers attempt to draw a histogram, depicting data on the number of reported children from a sample of health department employees. Which of the following pieces of advice would you give them to correct errors in their attempted graph below?
Yes -- her chosen method would be the best way of obtaining a representative sample of US residents. 4 2 0-1 1-22-33-44-55-6Explanation / Answer
A) No, her method of sampling is not a good one because it does not cover the entire population. When she stand outside the gym to collect the information, the people who come may not be willing to answer her questions and the chances of getting the correct response is very low. Also, the people who are willing may not be a representation of the different section of the society whose lifestyles vary. For example, the lifestyle of a middle class family may be different from a rich family.
So, rather than standing outside the gym or in a particular place and collecting infrmation if she select a sample which contains people from different section of the society, the results will be better.
b)All the choices listed are appropriate to use with nominal data.
c) All the listed choices are correct.
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