Unit 5

Question 1

what is data wrangling?

Answer 1

the process of transforming and structure raw data into a usable format for analysis

Question 2

what are the 6 steps of data wrangling?

Answer 2

discover, structure, clean, enrich, verify/validate, publish

Question 2

what is the 1st step of data wrangling?

Answer 2

discover - explore and understand your data

Question 3

what is the 2nd step of data wrangling?

Answer 3

structure - organize and format raw data, handle missing values, convert data types, and standardize

Question 4

what is the 3rd step of data wrangling?

Answer 4

clean - address inconsistencies, errors, and outliers

Question 5

what is the 4th step of data wrangling?

Answer 5

enrich - provide additional information, context, depth, etc

Question 6

what is the 5th step of data wrangling?

Answer 6

verify/validate - data integrity, quality, reliability

Question 7

what is the 6th step in data wrangling?

Answer 7

publish - available and should be documented

Question 8

what is index overlay?

Answer 8

combining criteria - identifies how much criteria is satisfied at each location

Question 9

what is weighted linear combination?

Answer 9

combining criteria - simple additive weighting, involves linear tradeoffs

Question 10

what is weighted product combination?

Answer 10

combining criteria - when criteria are interdependent

Question 11

what are cobb-douglas functions?

Answer 11

combining criteria - an exponent causes diminishing returns for higher values (think like a curve), larger increase for smaller values

Question 12

what are weighted exponential combining criteria used?

Answer 12

when extreme values need to be emphasized

Question 13

what is the decision rule?

Answer 13

a means of selecting particular alternatives from a set of available options