data wrangling & eda

Question 1

what is data wrangling?

Answer 1

transforming raw data for analysis (useful for formatting, missing/corrupt values, unit conversion)

Question 2

what is EDA?

Answer 2

exploratory data analysis–open ended analysis to get to know the data

Question 3

quantitative continuous

Answer 3

can be measured to arbitrary precision – price, temperature

Question 4

quantitative discrete

Answer 4

finite possible values – # of siblings, years of education

Question 5

qualitative ordinal

Answer 5

categories w/ ordered levels : preferences, level of education

Question 6

qualitative nominal

Answer 6

categories with no specific orderding – political association, cal ID #

Question 7

what is granularity?

Answer 7

how fine/coarse is each datum?

Question 8

what is scope?

Answer 8

how (in) complete the data is

Question 9

what is temporality?

Answer 9

how is the data situated in time?

Question 10

what is faithfulness?

Answer 10

how well does the data capture reality?