**Histogram – ** Histogram is a chart of poles. Plotting histogram is a graphical method for summarizing the distribution of a given attribute, the resulting distribution is most commonly known as bar chart.

**Scatter Plot- **Scatter plot is one of the most effective graphical methods for determining if there appears to be a relationship or pattern between two numeric attributes.

Positive Correlation – If the pattern of the points slopes from Lower left to Upper right.

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Negative Correlation – If the pattern of the points slopes from upper left to lower right.

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