Income
Education
Occupation
Gender
Age
Religion
Ethnicity
The research error described above is an example of selection bias.
Selection bias takes place when, from a population of interest, a group of individuals is selected in order to construct a sample but without a proper randomization. The result is a sample which is not representative of the underlying population.
According to the example, the target population of the research comprises all students but the sample only includes boys. Hence, selection has not been random because it followed a gender criteria, and the results obtained using it cannot be applicable to the whole population because they are affected by a selection bias.
The correct answer is Random
Explanation: A random sampling is a subset of individuals (the sample) selected entirely at random from a larger set (the population) by a process that ensures that: All individuals in the population are equally likely to be chosen for the sample
Bankruptcy is a legal rank of a person or other object
that cannot reimburse debts to creditors. In here the high rate means that it
is a legal process in which a court takes over approximately of the finances of
an individual who is incapable to recompense his or her bills.
