Please Define Three Random and Three Nonrandom Sampling Techniques

Q1: The mathematical term for the variation around

Q2: A _ sample is one in which

Q3: What is a disproportionate stratified sample and

Q4: A(n) _ is the discrepancy between an

Q5: A _ sample is a probability sample

Q7: A _ sample in which elements are

Q8: The mean of many independently and randomly

Q9: In a _ sample, respondents are used

Q10: What are the advantages and disadvantages of

Q11: If a sampling frame is incomplete or