The correct answer is D. All of these.
In order to augment the accuracy of a study, the researcher should increase the size of his sample, be honest and unbiased, and keep the variance high.
A larger sample size will give the researcher a more accurate representation of the population he is studying. A researcher who is honest and unbiased will not cherry-pick data or make conclusions that are not supported by the evidence. A high variance means that there is a lot of variation in the data, which can help the researcher to identify patterns and trends.
Here are some additional details about each of these points:
- Increase the size of his sample. The larger the sample size, the more accurate the results of the study will be. This is because a larger sample size will give the researcher a more representative sample of the population he is studying. For example, if a researcher is studying the average height of adults in the United States, he would want to survey a large number of adults in order to get an accurate estimate of the average height.
- Be honest and unbiased. It is important for a researcher to be honest and unbiased in his work. This means that he should not cherry-pick data or make conclusions that are not supported by the evidence. For example, if a researcher is studying the effectiveness of a new drug, he should not only report the results that show that the drug is effective. He should also report the results that show that the drug is not effective.
- Keep the variance high. A high variance means that there is a lot of variation in the data. This can help the researcher to identify patterns and trends. For example, if a researcher is studying the number of hours that students study each week, he might find that there is a lot of variation in the data. This variation could be due to the fact that some students are more motivated than others, or that some students have more time to study than others. The researcher could use this variation to identify factors that are associated with the number of hours that students study.
In conclusion, in order to augment the accuracy of a study, the researcher should increase the size of his sample, be honest and unbiased, and keep the variance high.