is a numerical summary of a sample.
A statistic
A numerical summary of a sample is a way of representing the main characteristics of a set of data. It is a summary of the important features of a dataset, such as the average, variability, and spread of the data. A numerical summary of a sample may include one or more of the following statistics:
1. Mean: This is the arithmetic average of the sample, which is calculated by adding up all the values and dividing by the total number of values.
2. Median: This is the middle value in the sample when the values are arranged in order of magnitude.
3. Mode: This is the most frequently occurring value in the sample.
4. Range: This is the difference between the maximum and minimum values in the sample.
5. Standard deviation: This is a measure of the spread of the data around the mean.
6. Variance: This is a measure of how much the data varies from the mean.
In summary, a numerical summary of a sample is a useful way to capture the essence of a data set in a few numbers. It helps to provide a quick and easy way to compare different sets of data and can be used to make informed decisions based on the relationships between different variables.
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