Index:
Introduction
Learn in this guide how to calculate the confidence level of your sample.
The sample confidence calculator is a tool located within Create Files, allowing you to determine the volume of publications needed to achieve a certain confidence level percentage, considering another percentage of margin of error.
To learn more about creating files, read our guide. After the creation process, you can enter the Files section to view and search for a specific file.
Before creating the sample, it is necessary to understand the following concepts:
- Confidence level - Known as the "confidence interval," this data is an indicator of precision between 90%, 95%, and 99%. This means that the selected percentages are closer to the original estimate.
- Margin of error (in %) - This metric is related to the confidence level and expresses the amount of random sampling errors (per sample) that may appear in the results of a survey.
- Total population: Total number of publications selected for the sample.
- Required sample: According to the previous settings, the system will calculate for you the number of publications the file needs to deliver the data.
Important! In statistical terms, the margin of error is the measure of the radius or half the width of the confidence interval for the same statistic. This means that the margin of error cannot be high in relation to the confidence level.
For example, for a sample with 99% confidence level and a margin of error of 1%, for a total population of 2 thousand posts, you would need to classify 1,786 posts. Check in the image below:
So, in this area, you can statistically calculate the ideal sample value to obtain a confidence level in relation to the total population. Based on this data, you can decide the sample value to be considered for the file.
How to use the calculator?
First, go to the Publications menu and click Classify. Then, click on Create File and find the calculator icon.
Here, you can calculate the confidence level that this sample has in relation to your total population. To know the required sample, click on the calculator icon and choose the following parameters: Confidence level, Margin of error, Total population, and Required sample.
After validating the data and considering the best alternative - using selected publications or generating a sample of random publications - simply create the file by selecting the button with the desired option. In the side menu, you will have access to all created files:
Attention! A generated file cannot be edited. If more publications appear after creating the file, it will be necessary to generate a new file to include them.
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