Question

Part 1.Careful analysis of a sample will indicate whether or not it was randomly selected. a. True b. False c. True, but only if the mean can be produced from response rates. d. True, but only if the same researcher conducts the sample and analysis.

Part 2. Sampling error suggests an error has been created by the data inputter? a. True b. False

part 3. Data obtained from a sampled group of willing participants are always more accurate than data obtained from existing census information, regardless of the construction of the study? a. True b. False

Answer 1

PART 1

true.

it can't be option d because if the researcher conducting the analysis is the same as the one who collected the sample, he/she would already know in advance if the analysis is random or not without doing careful analysis.

it can't be option c because whether the mean can be produced or not don't depend on the randomness of the sample.

PART 2

FALSE. sampling error always exists in studying the statistical properties of a function without taking the whole population but just a sample which may not depict the whole picture represented in the population