IS 470 EXAM 1 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
3 views 0 purchase
Course
GXMO
Institution
GXMO
IS 470 EXAM 1 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
Exploring the Structure of Data - ANSWER -Display data frame with Python Code(ex.P)
-Number of instances
-Number of variables
-Type of each variable(categorical, numerical)
-Missing Values
-Missing Mechanism: understanding the...
IS 470 EXAM 1 QUESTIONS AND ANSWERS
WITH SOLUTIONS 2024
Exploring the Structure of Data - ANSWER -Display data frame with Python Code(ex.Pokemon.csv)
-Number of instances
-Number of variables
-Type of each variable(categorical, numerical)
-Missing Values
-Missing Mechanism: understanding the reasons why data are missing
-Deal with missingness
-EX( dataframe.isnull().sum() )
What is BI - ANSWER -Business intelligence is the collection of processes, technologies, skills, and
applications(data mining the process of generating insights from large data) to make informed data-
driven business decisions (business problems)
-BI includes data collection, data aggregation, analysis, and meaningful presentation that facilitates
decision-making
Why BI? - ANSWER Data: data are any facts, numbers, or text that can be processed by a computer.
•Computerization of businesses produce huge amount of data
• Online e-businesses are generating even larger data sets
· There is a huge gap from stored data to knowledge
, •Business intelligence helps generate insights from data to support business decisions and improve the
profitability and efficiency
CONT. - ANSWER If a variable represents a characteristic measured in numbers, it is unsurprisingly called
numeric variable. if a variable consists of a set of categories, the variable is called categorical variable.
Data understanding: With preliminary analysis, data exploration provides a high level overview of each
variable in the data set and interaction between the variables.
Exploring the Structure of Data - ANSWER -Display data frame with Python Code(ex.Pokemon.csv)
-Number of instances
-Number of variables
-Type of each variable(categorical, numerical)
Missing Values - ANSWER -Missing Mechanism: understanding the reasons why data are missing
-Deal with missingness
-EX( dataframe.isnull().sum() )
Exploring Numeric Variables - ANSWER · Employ a common set of measurements to describe values
known as summary stats
· Measures of central tendency are a class of stats used to identify a value that falls in the middle of a set
of data
o Mean
o Median
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Performance. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.99. You're not tied to anything after your purchase.
