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What effect does non-random sample have on what you can say about the results of a study?
Wiki User
∙ 10y ago
It means that the results of the study cannot be claimed to hold for the entire population from which the sample was drawn. The researchers can only claim that their results hold for the individuals selected into their sample.
Wiki User
∙ 10y ago
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What is a sample study?
sample is the population we make our study about them.
Why was it important to Mendel to study such a large sample of pea plants to determine the probability of inheritance?
Answer D- A higher sample size gives more accurate results- APEX LEARNING
Does the size of a sample affect the values of the frequency table?
Yes. If the sample is a random drawing from the population, then as the size increases, the relative frequency of each interval from the sample should be a better estimate of the relative frequency in the population. Now, in practical terms, increasing a small sample will have a larger effect than increasing a large sample. For example, increasing a sample from 10 to 100 will have a larger effect than increasing a sample from 1000 to 10,000. The one exception to this, that I can think of, is if the focus of the study is on a very rare occurrence.
Graphs and intercepts in the real world?
businesses would use them to predict trends in data and statisticians would use them to extrapolate the results of a sample group of a study or survey.
Unlike an observational study an experiment can prove?
cause and effect
How do sampling methods effect the rigor of a study?
A sample needs to be random and if not a simple random sample of the whole population then a stratified random sample (there are different ways to stratify). Otherwise the study is a waste of time.
Why was it important for mendel to study such a large sample of pea plant?
(Apex Learning) A higher sample size gives more accurate results.
What is a sample study?
sample is the population we make our study about them.
The best most reliable sampling technique is the one that has the smallest chance of unknowingly producing biased results in a study?
Convenience sample Systematic sample Simple random sample (SRS) Census
Why was it important for mendel study such a large sample of pea plants?
(Apex Learning) A higher sample size gives more accurate results.
Why was it important for Mendel to study such a large sample pea plants to determine the probability of inheritance?
Answer D- A higher sample size gives more accurate results- APEX LEARNING
Why was it important to Mendel to study such a large sample of pea plants to determine the probability of inheritance?
Answer D- A higher sample size gives more accurate results- APEX LEARNING
What is he conclusion from research conducted on a sample population to the population as a whole?
Assuming that the population was carefully defined, the sample population was carefully and correctly chosen, and that there were significant results, then the implication is that the results of the study, within the confidence limits indicated, hold true for the population at large.
Is the study experimental or observational A sample of fish is taken from a lake to measure the effect of pollution from a nearby factory on the fish?
observational
Why is a voluntary response sample not suitable for a statistical study?
Voluntary response sample is not generally suitable for statistical study because its results are not likely to be the representative of the entire population under study.Such results could be biased as those who made effort to respond voluntary have strong feelings or opinions whether favorable or unfavorable regarding the subject of consideration.
Why did Mendel study such a large sample of pea plants to determine the probability of inheritance?
The more samples you use, the closer your results will match probability.
An experiment involves selecting a random sample of 256 middle managers for study One item of interest is annual income The sample mean is computed to be 35420 and the sample standard deviation is 205?
The deviation would be how much off it would be off. Since this is a sample, it is impossible to get completely accurate results.
