Without using references, discuss how sampling affects the validity of a study. Would that be internal or external validity? How would you judge a sampling error in a study?
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RESPONSE:
1. Without using references, discuss how sampling affects the validity of a study. Would that be internal or external validity?
The effect of sampling on validity is an interesting relationship.
(1) First, internal validity is impacted by sample size in descriptive or cross-sectional studies. In such studies, you measure each variable only once, and your outcomes are relationships between the variables. The lower the validity, the more the relationships are degraded, so the bigger the sample size you need to characterize them. So, if you have a smaller sample, the internal validity of the study is challenged due to this degradation of relationships between variables.
In other words, if your sample size was too small, you might not find a relationship ...
Solution Summary
This solution discusses how sampling affects the validity of a study and whether that would be internal or external validity. It also discusses how a researcher would judge a sampling error in a study.
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Please include a reference so that I can expand on this topic. Than
For its validity, all hypothesis testing depends heavily on the assumption that the sample that is used was drawn using probability sampling techniques.
Why is this important?
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When it comes to conducting experimental research, interpretation of the results can be influenced greatly by the extent to which an experiment has internal and external validity. Discuss the importance of external and internal validityand some of the threats to each of these. What is the impact of having one type of validity b
6.1
Consider the following data to be a population of N=20 values
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5 3 2 6 6 7 3 3 6 7
7 9 7 5 3 12 6 10 7 2
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What is the Central Limit Theorem? How large should the sample size be if the underlying distribution of the population values are:
a. Normally distributed (discuss).
b. Non-normally distributed. (discuss)
2. What is the difference, if any, between the standard deviation of the sample and the standard error of the mean
Discuss the difference between random samplingand stratified random sampling.
When is it most appropriate to use stratified random sampling techniques?
Total pieces was 57
Color Sample M & M Count Website Count (%) SamplingError +/-
Blue 23.2% 24% .8%
Red 10.7% 13% 2.3%
Yellow 12.5% 14% 1.5%
Orange 17.9% 20% 2.1%
Green 17.9% 16%
I have an assignment in which I am to calculate the samplingerror from a bag of M & M's.
the directions were to go buy a bag of M & M's from the store and count the colors. The go to M & M's web site and get the % counts of each color.
Compare your counts (%) to those of the M & M web site.
Calculate your samplingerror
