x bar
The term “x bar” refers to the sample mean, which is used in statistics to represent the average value of a set of data
The term “x bar” refers to the sample mean, which is used in statistics to represent the average value of a set of data. It is denoted by the symbol “x̄” (pronounced as “x-bar”).
To calculate the sample mean, you add up all the values in the data set and divide the sum by the total number of data points.
For example, if you have a data set {5, 8, 10, 12, 15}, the sample mean (x̄) would be calculated as follows:
x̄ = (5 + 8 + 10 + 12 + 15) / 5
= 50 / 5
= 10
Therefore, the sample mean of this data set is 10. It represents the average or typical value of the data points.
The sample mean, x̄, is a useful measure of central tendency and is often used to make inferences or draw conclusions about a larger population.
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