# What is Sturges formula?

**Sturges rule**. [′st?r·j?s ‚rül] (statistics) A

**rule**for determining the desirable number of groups into which a distribution of observations should be classified; the number of groups or classes is 1 + 3.3 log n, where n is the number of observations.

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Likewise, what is the purpose of Sturges rule?

**Sturges**' **rule** is a **rule** for determining how wide to choose bars (i.e. of the bins) when visually representing data by a histogram. It says the data range should be split into k equally spaced classes where.

Beside above, what is Doane's rule? Abstract Most statistical packages use Sturges' **rule** (or an extension of it) for selecting the number of classes when constructing a histogram. This is Sturges' **rule**. If the data are not normal, additional classes may be required; **Doane** (1976) proposed a modification to Sturges' **rule** to allow for skewness.

One may also ask, what is Binwidth?

A histogram looks similar to a bar graph, but instead of plotting each individual data value on the x-axis (the horizontal one), a range of values is graphed. This histogram has a "**bin width**" of 1 sec, meaning that the data is graphed in groups of 1 sec times. We could change the **bin width** to be larger or smaller.

What is K in frequency distribution?

Sturge's Rule. ∎ A rule for determining number of. classes to use in a histogram or **frequency distribution** table. ∎ Sturge's Rule: **k** = 1 + 3.322(log10 n), **k** is the number of classes, n is the size of the data.