Blockchain security (Is it unbreakable?) - ️️Blockchain is protected by businessgrade cryptography, but no technology is 100% secure. And when large sums of money
are involved, hackers will try to follow. So security concerns could also slow blockchain
adoption. 51% rule
Blockchains lineage ...
ISQS 2340 Exam 2 Review TTU- Mitchell
Blockchain security (Is it unbreakable?) - ✔️✔️Blockchain is protected by business-
grade cryptography, but no technology is 100% secure. And when large sums of money
are involved, hackers will try to follow. So security concerns could also slow blockchain
adoption. 51% rule
Blockchains lineage (where it came from/ first used)? - ✔️✔️A block consists of
multiple timestamped transactions • Multiple blocks are joined together in a chain •
Nodes are connected devices that have a copy of the entire blockchain • The nodes are
periodically synchronized to ensure consensus
Examples of Google using data and analytics? - ✔️✔️At Google. decisions are based
on data, analytics and scientific experimentation.
Tried to answer the question of: Do managers matter?Determine the data to use (see
what's available and what might be needed) • Performance reviews (top-down) and
employee surveys (bottom-up) of managers • Looking for variability: Top and bottom
quartiles • Analyze the data using statistical methods
The abundance of data, and its implications and the potential benefits from analytics for
businesses? - ✔️✔️Big Data - The sheer volume of data
• Increased efficiency • Improved operations • Enhanced customer retention
Purpose and usef What is a data-driven culture? - ✔️✔️A data-driven culture uses
data-driven decision making
ulness of Tableau and data visualization in general? - ✔️✔️Data visualization is not a
personal preference, to be done "just in case some people are more visual." It is a
necessity! • The previous slide is a classic example of how some insights can only be
found through visualization. Remember the picture superiority effect: pictures are
retained at much higher rates than words.A good visualization reduces the time to
insight.
Value creation with data analytics (think exchange transactions and uncertainties)? -
✔️✔️NO pie charts! Yes to scatterplots for exploring relationships. Yes to treemaps for
relative proportions. Orient data so people can read it (better to have a horizontal bar
chart than a vertical bar chart). Filled maps with only one measure, dash boarding
what is blockchain technology? - ✔️✔️A blockchain is a distributed ledger of
transactions
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