<h2>Mean</h2>
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<h3>Definition: Mean</h3>
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<p>The mean is the sum of a set of values, divided by the number of values in the set. The notation for the mean of a set of values is a horizontal bar over the variable used to represent the set, for example \(\bar{x}\). The formula for the mean of a data set \(\{{x}_{1}; {x}_{2};...;{x}_{n}\}\) is:</p>
<p>\begin{align*} \overline{x}&amp; = \cfrac{1}{n}\sum _{i=1}^{n}{x}_{i}\hfill \\ &amp; = \cfrac{{x}_{1} + {x}_{2} + \ldots + {x}_{n}}{n} \end{align*}</p>
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<p>The mean is sometimes also called the average or the arithmetic mean.</p>
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<h2>Example</h2>
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<h3>Question</h3>
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<p>What is the mean of the data set \(\{10; 20; 30; 40; 50\}\)?</p>
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<h3>Calculate the sum of the data</h3>

\[10 + 20 + 30 + 40 + 50 = 150\]</div>
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<h3>Divide by the number of values in the data set to get the mean</h3>
<p>Since there are \(\text{5}\) values in the data set, the mean is:</p>
<p>\[\text{mean} = \cfrac{150}{5} = 30\]</p>
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Mean

Mathematics studies measurement, relationships, and properties of quantities and sets, using numbers and symbols. Arithmetic, algebra, geometry, and calculus are popular topics in mathematics.

Mathematics

Explore various statistical concepts, such as data collection, measures of central tendency and dispersion, histograms, and curve fitting techniques like linear regression, to better interpret and analyze data with accuracy and precision.


Mean

Mean

Definition: Mean

Example

Question

Calculate the sum of the data

Divide by the number of values in the data set to get the mean

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