Visual Analytics

Visual analytics is useful in anlysing trends
Visual analysisation we can also create. what are the visualizations we can create?
many visualizations like scatter,histogram.
There are three categories of datas where data falls
Nominal-it cannott be compared
ordinal-it be order,can compare
ratio-compare,difference between,ratio data

Nominal data examples: names of employee(name cannot be compared)
ordinal data can be put in order...rating of employee(high,low)
 ratio data : age of salary, salary of employee,

ie first getting twice salary of second employee

data should be categorised in that way.
if student data is given ,identify it
student id rank
1009          2
1008          8
1007         10
it is ordinal data
department name of particluar company..it is nominal data. Based on the data given, create visualizations

Scatter plot is used to relation between two sets of data.

lets consider you are going to buy a car, we decide based on price and horse power that is two relations  which shows positive and negative relations. Mainly scatter plot is used for this.

Histograms:
for the length ...in tableau automatically creates bin variable
bar graph: bar graph is horizontal and vertical






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