What is the last step in the sample plan?

What is the last step in the sample plan?

a. obtain a listing of the population
b. draw the sample
c. define the sample
d. design the sample plan (size, method)
e. validate the population


Answer: e. validate the population

Which of the following is NOT true of river samples?

Which of the following is NOT true of river samples?

a. A river sample is created via the use of banners, pop-ups, or other online devices that invite website visitors to take part in the survey.
b. The "river" is the steady stream of website visitors.
c. The sample frame of a river sample is the stream of visitors visiting the site issuing the invitation.
d. River samples are considered random samples of these sample frames as long as the invitations are not unusual in duration, appearance, or relevance.
e. All of the above are true of river samples.


Answer: e. All of the above are true of river samples.

Respondents are asked for the names or identities of others like themselves who might qualify to take part in the survey. This is a description of which type of nonprobability sampling method?

Respondents are asked for the names or identities of others like themselves who might qualify to take part in the survey. This is a description of which type of nonprobability sampling method?

a. Quota sampling
b. Purposive sampling
c. Referral sampling
d. Convenience sampling
e. None of the above


Answer: c. Referral sampling

A(n) ___________ population has a long tail on one side and a short tail on the opposite end.

A(n) ___________ population has a long tail on one side and a short tail on the opposite end.

a. skewed
b. one-tailed
c. normal
d. unusable
e. normally distributed


Answer: a. skewed