Question

Karras (2008) reports on a survey conducted by SELF magazine on prevalence of eating disorders in women. The survey, posted online at self.com, obtained responses from 4000 women. Based on these responses, the article reports that 27% of women in the survey “say they would be ‘extremely upset’ if they gained just 5 pounds”; it is estimated that 10% of women have eating disorders such as anorexia or bulimia. Find the following:

Target population:

Sampling frame:

Sampling unit:

Observation unit:

Sources of selection bias or inaccuracy:

Answer 1

From the given information

The survey, posted online at self.com, obtained responses from 4000 women. Based on these responses, the article reports that 27% of women in the survey “say they would be ‘extremely upset’ if they gained just 5 pounds”; it is estimated that 10% of women have eating disorders such as anorexia or bulimia.

We can find following

Targer Population : all women

Sampling frame : women who provided responses to self.com

Sampling unit : woman participating in the survey

Observational unit : number/proportion of women have eating disorders such as anorexia or bulimia