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Chapters 4, 6, 9
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Qualitative Data
Categorical data. All you can do is count group, or rank.
Can be nominal or Ordinal
Nominal Data
The least sophisticated type of qualitative data. You can count, group, and take a proportion
Ex: gender
Ordinal Data
Qualitative data that can be ranked
Ex: gold, silver, bronze
Proportion Data
Qualitative data that shows the makeup of each category
Quantitative data
More complex than qualitative data because the differences between data points are meaningful
Ratio Data
The most sophisticated data type, quantitative data that can be counted and grouped. Defines 0 as
ex: cash
Interval Data
Quantitative data where 0 is just another number
Ex: temperature
Discrete data
Quantitative data, only whole numbers
Continuous data
Quantitative data that can show numbers with decimals
Distributions
describe the mean, median, and standard deviation of the data
Normal distribution
A type of distribution where the mean, median, and mode are all equal, so half of all observations are above the mean and half are below.
standardization
the method used for comparing two datasets that follow the normal distribution
Declarative Visualizations
Made when the aim of your project is to “declare” or present your findings to an audience
Exploratory Visualizations
Made when the lines between steps PAC are not as clearly divided as they are in a declarative visualization project
usually a test plan directly in a visualization software
Bar charts, pie charts, stacked bar chart, tree map, heat map, symbol map, word clouds
When you want to show qualitative data:
Line charts, box and whisker, scatter plots, filled geographic maps
When you want to show quantitative data:
Financial Statement Audit
an objective examination and evaluation of the financial statements of an organization to make sure that the financial records are a fair and accurate representation of the transactions they claim to represent
Nature
represents why auditors perform audit procedures
Extent
indicates how much auditors can test (think scope)
Timing
How often the testing procedure should be run
Process Mining
Analysis technique of business processes used to diagnose problems and suggest improvements where greater efficiency may be applied
Descriptive Analytics - Audit
summarize activity or master data on specific attributes
age analysis, sorting, summary statistics, and sampling, fuzzy matching
Diagnostic analytics -audit
look for correlations or patterns of interest
Ex: z-score, Benford’s law, drill-down, clustering
Prescriptive analytics - audit
make recommendations based on past data
ex: applied statistics, what if analysis, AI
Predictive Analytics - audit
Help auditors discover hidden patterns linked to abnormal behavior
Regression, probability, classification
Computer-assisted audit techniques (CAAT)
automated scripts that can be used to validate data, test controls, and enable substantive testing of transaction details or account balances and generate supporting evidence for the audit
Fuzzy Matching
Process that finds matches that may be less than 100 percent by finding correspondences between portions of the text or other entries
Benford’s law
The principle that in any large, randomly produces set of natural numbers, there is an expected distribution of the leading digit of 1 being most common, then 2, and so on
Sentiment analysis
enables the evaluation of text for distributions of words that may be classified as positive or negative outcomes or to look for potential bias
Data Warehouse
a repository of data accumulated from internal and external sources, including financial data, to help management decision making
Data mart
a subset of the data warehouse focused on a specific department to assist and support its needed data requirements
Ex: tax data mart
tax cost, tax risk, tax efficiency/effectiveness, sustainability, and permanent differences
Tax KPIs focus on tax management: