# Basic definition of Visualizing Data|Data Science Tutorial

**Frequency ****Distribution**

**Frequency:** The frequency of a data set is the number of times a certain outcome occurs.

**Proportion: **A proportion is the fraction of counts over the total sample. A proportion can be turned into a percentage by multiplying the proportion by 100.

**Histogram:** is a graphical representation of the distribution of data, discrete intervals (bins) are decided upon to form widths for our boxes. Adjusting the bin size of a histogram will compact or spread out the distribution.

**Skewed Distribution**

**Positive Skew:** A positive skew is when outliers are present along the right most end of the distribution.

**Negative Skew:** A negative skew is when outliers are present along the left most end of the distribution.

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