Big Data

Question 1

Speed of big data generation

Answer 1

very fast (real time)

Question 2

Big data formats

Answer 2

various (text, image, videos etc).

Question 3

Big data is normally ______ data

Answer 3

unstructured data

Question 4

What is big data used for

Answer 4

• predict behaviours
• provide insights
• make better choices (informed decisions)

Question 5

Abate information

Answer 5

Data -> information -> knowledge -> insight
(add context, add business context, understand the question)

Question 6

How is big data stored

Answer 6

data lake

Question 7

How is big data transformed

Answer 7

ELT

Question 8

Prescriptive Analystics

Answer 8

Predicts and suggests what to do to make the most of an opportunity or avoid a risk

Question 9

Predictive Analytics

Answer 9

uses maths and past data to guess what will happen in the future (helps react quickly to changes)

Question 10

If you are building statistical models that find correlations and trends among data elements and data sets, which activity are you performing?

Answer 10

Develop Hypotheses & Methods

Question 11

When Securing Big Data, what does recombination measure?

Answer 11

Measures the ability to reconstitute private and sensitive data

Question 12

Common techniques used in data and text mining

Answer 12

Data reduction
Association
Profiling
Clustering

Question 13

You need to discover possible relationships or to show data patterns in an exploratory fashion when you do not necessarily have a specific question to ask. What kind of data tool would you use to identify patterns of data using various algorithms?

Answer 13

Data Mining