Which of the following types of sampling relies on the sampling frame being in r

Question

Which of the following types of sampling relies on the sampling frame being in random order? Simple random sampling Convenience Sampling Systemic Sampling Purposive Sampling Which of the follow is among the advantages of random sampling? The probability of selection of each respondent is known in advance the danger of not selecting some needed variable is eliminated It can produce probability samples or purposive samples. The technique it always perfectly distributed Probability sampling techniques when the estimated truth of conclusions involve generalization are most often associated with Internal validity External validity Construct validity Ecological validity If we divide the population into groups by geographic areas, randomly sample a subset of areas, and then measure every unit of each sample group we are using: Simple random sampling Stratified random sampling Systematic random sampling 'luster random sampling

Explanation / Answer

Question 13:

Simple random sampling takes random distribution whereas all other mthods follows a particular way of picking up the observation. For eg: systematic sampling starts from a particaular observation and takes observation by a predetermined process. Thus the picking up of first observation is random in this case which is not the case with simple random sampling

Question 14:

Since it follows a kind of random picking of observations, it can produce probability samples or purposive samples

Question 15:

External validity. from the definition of external validity

Question 16:

Stratified random sampling. From the definition

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