Scatter Plot
Scatter plot is a graph where in two variables are plotted against X and Y Axes. The plotted data might reveal the correlation between the two variables plotted.
Visual Look:
Scatter plots are similar to line graphs. The only difference is a line graph has a continuous line while a scatter plot has a series of dots.
Primary goal:
This type of plot is used to identify relationship between the two variables. The relationship could indicate the following:

Strength

Shape – Linear, Curved, etc.,

Direction – Positive or Negative

Presence of Outliers
When do we use it?

When we need to understand the causeandeffect relationship

When we need to understand the relationship between two variables.
Example scenarios:

Age and weight

Variation in sales based on certain conditions (E.g., Temperature in the City, Event,etc.,)

Increase in adoption of telephones over the years
Example of Scatter Plot done in Excel:
Source Data:
Graph:
Source: http://mospi.nic.in/Mospi_New/upload/SYB2014/ch31.html
In the next post we will see how we can do the same with “R”.
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