describe why it is important for the sample in your study to be as representative as the source

Q: ow can I change it to a representative sample

A: In convenience sampling, the individual samples are easily determined and do not depend on…

Q: Comment on the sample size used in this study. Specifically, is the sample unnecessarily large? Is…

A: From the given information we want to know the given sample size is good or not.

Q: Consider the data set 7, 9, 14, 15, 22. What is the standard error of the sample mean?

A:

Q: Describe how to Convert a Sample Mean to z.

A: z-score denotes the standardized normal score.

Q: Find the variance of the set of sample data: 55,53,76,52,91,98

A:

Q: Does the sample size ? affect the mean of all possible sample means? Explain your answer.

A: According to central limit theorem, for large sample (>30) or if the population follows normal…

Q: How is a sample related to a​ population?

A: Population is set of all elements about which we want to know. While the sample is a part of such…

Q: can you give the importance of  work sampling in health care?

A: Given problem Given that   Work Sampling : i) It is a type of sampling technique ii) It determines…

Q: What do you think is the reason, why researchers prefer to get a sample from the total population…

A: A researcher can carefully design the study which to a large extent try to prevent the biases and…

Q: Explains how population and sample differ?

A: Introduction: Population of interest: The population of interest includes all the individuals of…

Q: a) Why do you think any serious researcher would use the sample mean as a measure center to estimate…

A: (a) solution

Q: what is sample and population ?

A: Population : Population refers to all possible individuals or subjects in a study Or we can say that…

Q: The sample should include men and women.

A: Margin or error = 0.02 z-critical value at 0.05 = 1.96

Q: how does the sample and population relate?

A: Sample and population both are different items, but both are related with each other. Population is…

Q: State 2 reasons why a sample survey may be preferred over conducting a census to obtain data.

A: Census: A census is a collection of information from all units in the population or a complete…

Q: What is the name of this type of sample?

A: In the method of convenience sampling, the individual samples are easily determined and do not…

Q: What is the size of the sample: What is the size of the population:

A: HERE GIVEN INFORMATION ABOUT POLITICAL SCIENTIST SURVEY. SO DERIVING VALUE OF SAMPLE SIZE AND…

Q: Explain what is meant by the term “sampling distribution”.

A:

Q: Explain the difference between an independent and dependent sample. Give an example of each.

A: Dependent samples:The two samples are said to be dependent if there exist an effect of one on…

Q: Describe what you see in the attached scatterplot for a sample of 20 low birth weight infants.

A: Use the Excel and Calculate the Correlation  Followings are the Steps to Calculate Correlation 1)…

Q: In sampling, explain why obtaining a representative sample is important.

A: Representative sampling is important in sampling technique.

Q: We would like to determine the average height of the overall student body at Michigan State…

A: Yes, It is necessary to take a sample from the overall student body.

Q: If you increase the sample size to 50 from 30, will the standard error of the mean be smaller or…

A: When increasing the sample size to 50 from 30, the standard error of the mean would be smaller…

Q: Explain how judgement is used in statistical and non-statistical sampling.

A: The statistical sampling is based on the theory of probability. In statistical sampling each element…

Q: List three reasons why samples are used in statistics

A: Solution: Population is the entire set of units under study. Sample is the subset of population.

Q: Does the sample size have an effect on the mean of all possible sample means? Explain your answer.

A:

Q: Is the sample mean always the most frequently occurring value? If so, explain why. If not, give an…

A: No, Sample Mean is not the most frequent Occuring Value.   Mean= Sum of Observations / No.of…

Q: What value should we expect for our sample proportion?

A: We have to answer question based on proportion.

Q: Briefly explain how theory development might impact the selection of a sample.

A: Find: The theory development might impact the selection of a sample.

Q: What is the difference between Sample and Population? Provide an example of each.

A: Population -whole number of individuals Sample - a part of population taken randomly

Q: Explain about if larger the sample size, what does this reflects.

A:

Q: Describe the sampling distribution for the sample means

A: Given, n=100 μ=55 σ=20

Q: Here is an illustration of a population survey. Identify what survey sampling method was used and…

A: There are in general 4 survey sampling methods.  Simple Random Sampling: Each member of the sample…

Q: Explain why the margin of error determines the accuracy with which a sample mean estimates a…

A:

Q: Why a casual or haphazard sample doesn’t qualify as a random sample?

A: Haphazard or casual sampling is where we try to create a random sample by haphazardly or casually…

Q: Describe the EFFECT OF SAMPLE SIZE.

A: In general, large sample size is required to get more precision of data. Sample size plays important…

Q: Does the sample size n affect the mean of all possible sample means? Explain your answer.

A:

Q: Explain the four different types of sampling and give an example of each.

A: Different types of sampling methods with examples.Types of random samplings(1) Simple random…

Q: What are the advantages of sampling over a census?

A: Population: In statistical enquiry our interest lies about gathering information about some…

Q: Explain sample?

A: To Explain the sample??

Q: What is Sample Mean?

A: A statistical population is a set of entities from which statistical inferences are to be drawn,…

Q: Explain why increasing the sample size tends to result in a smaller sampling error when a sample…

A: Sampling error:When a sample is used to estimate a population characteristic, the error resulting is…

Q: What are the applications of Biostatistics, Give at least two examples of your own relevant to…

A: Statistics can be in any form such as numbers, summaries of patterns and probabilities.…

Q: find sample variance of data   45,85,63,21,54,25,85,65

A:

Q: Explain the relation between a population and a sample. What characteristics should a sample have to…

A: A sample is basically a subset of population that is used in the research. For example if your…

Q: Explain step by steb  Consider your clan (family and relatives) as the population. List the members…

A: Sampling is nothing but the technique of selecting individual members from of the…

Q: What is the sample for the study

A: The sample is the subset of the population.

Q: what happens to the mean as the sample size increases?

A: It is given that the sample size is increasing.