EDA_topic 2

What is EDA?

• exploratory data analysis

• evaporation data analysis

• express data analyze

• none of the above

how to calculate mean?

• most common value in X

• Total Xi / n           

• sort(X)

• none

Histograms can be effective for

• small data sets

• large datasets

• all datasets

• none

What is the disadvantage of box plots?

• overplotting

• skewness

• hard to find the distribution

• a and c

Data from cities/states/zip codes can be plotted in

• histogram

• boxplot

• spatial plot

• scatter plot

•Maps using color shadings to represent numerical values are called chloropleth maps

• true

• false

Scatter plots are most commonly used to explore________variables

• 2

• 1

• 0

• i dont know

For very large datasets, use

• scatter plot

• zero plot

• contour plot

• all the above

pairwise scatterplots can be ineffective for ______

• numerical data

• categorical data

• interval data

• all the above

Choose the best answer to describe 3D charts

• –nice to be able to show three dimensions

• –hard to do well

• –often done poorly

• all the above