Question

Researchers can assume that studies that use random sampling always generate a representative sample that accurately...

Researchers can assume that studies that use random sampling
always generate a representative sample that accurately reflects
the population from which it was selected................................................ True------ False

The vast majority of social work studies use probability sampling......... True------ False

Homework Answers

Answer #1

Ans: (a) False because it is not necessary that studies that use random sampling always generate a representative sample. There are equal chances for a random sample tk be generated. However, in place of random sampling, stratified random sampling can be an important part of the process to create a representative sample

Ans: (b) True

Social work researchers usually try to select their cases using a random procedure in order to assure that no human bias exists in the selection process. They hope that the inferences they draw from their study will be maximally generalizable, statistically accurate, and useful. Using random procedures allows the use of probability sampling methods.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
In stratified sampling, a random sample of subgroups is selected and all members of the subgroups...
In stratified sampling, a random sample of subgroups is selected and all members of the subgroups become part of the sample. True False In stratified sampling, a random sample of subgroups is selected and all members of the subgroups become part of the sample. True False Non-probability sampling may not be representative of the population, thus it does not allow the researcher to explicitly identify possible biases. True False The object of sampling is to obtain data that is representative...
The process of random sampling guarantees that the sample selected will be representative of the population....
The process of random sampling guarantees that the sample selected will be representative of the population. Is this statement true? Discuss.
Select the true statement(s) about studies and random samples. ____A simple random sample is representative of...
Select the true statement(s) about studies and random samples. ____A simple random sample is representative of the entire population of interest. _____In an observational study, the researchers record the response for a specific variable for each individual or object. _____The number of simple random samples is always infinite. ____In an experimental study, the researchers investigate the effects of certain conditions on at least three different groups. _____A simple random sample is a systematic pattern for selecting objects from a population....
True or False 1. Simple random sampling will ensure a representative sample. 2. The whiskers on...
True or False 1. Simple random sampling will ensure a representative sample. 2. The whiskers on a box plot extend to the smallest and largest data pieces. 3. Variance can never be smaller than its standard deviation. 4. If a random variable, X, has the values x=2, 3, 4, 5 or 6 and P(x) = 0.05x then P(2<x<= 5) = 0.7
Use R. Generate a random sample with n=15 random observations from an exponential distribution with mean=1....
Use R. Generate a random sample with n=15 random observations from an exponential distribution with mean=1. Calculate the sample median, which is an estimator of the population median. Use bootstrap (nonparametric, with B=1000) methods to estimate the variance of the estimator for the population median. use the Monte Carlo method, e.g. generate 1000 samples of size 15 to estimate the true variance of the median estimator. Compare and comment on your results.
Which situation most commonly leads to convenience, availability, or accident sampling? When the researcher wants to...
Which situation most commonly leads to convenience, availability, or accident sampling? When the researcher wants to maximize the likelihood that the sample is representative of the population from which it is selected. When the researcher is knowledgeable about the study topic and wants to make sure that the sample includes particular types of members. When the researcher is friendly with a few “informants” in the hypothetical population who can help locate other members best suited for the study, often those...
QUESTION 1 It is best to use probability sampling when a. trying to understand the context...
QUESTION 1 It is best to use probability sampling when a. trying to understand the context of people’s actions. b. studying a small number of cases. c. the population is unknown or not readily identifiable. d. the research objective is to estimate population characteristics. 10 points    QUESTION 2 Which of the following describes a sampling distribution? a. distribution of individual responses in a single sample b. distribution of individual responses in a population c. probability distribution of individual responses...
Which of the following statements is not true for sampling distributions? a. A sampling distribution is...
Which of the following statements is not true for sampling distributions? a. A sampling distribution is necessary for making confidence statements about an unknown population parameter. b. A sampling distribution depends on the nature of the population being sampled. c. When sampling at random from a normal population, the sampling distribution for the sample average is a normal distribution. d. None of the above. AND TRUE or FALSE Assume a random sample of size n is from a normal population....
____   Simple Random Sample ____   Cluster sample ____   Systematic sample ____   Stratified sample 1.   While this...
____   Simple Random Sample ____   Cluster sample ____   Systematic sample ____   Stratified sample 1.   While this type of sampling is very eacy to carry out, and hence saves time and money, it can very easily yield samples which are non-representative of the population, unintentionally. Often, data comes "in cycles", where the beginning and the end of each cycle is "atypical". If the "kth" individual is picked at the beginning or at the end of a cycle more often than a...
Researchers A and B each have a random sample from the same population, which has mean...
Researchers A and B each have a random sample from the same population, which has mean and a finite variance. Here are their data: Researcher A        Researcher B Sample sizes                      nA   nB Sample means         Consider the following claims: Claim 1. If nA > nB, the estimator  puts too much weight on researcher A’s observations to be efficient. Claim 2. If nA ≠≠ nB, the estimator  is biased. Claim 3. If nA > nB, we can make the estimator  more efficient by...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT