Data Science Chapter 1

Which of the following is an example of structured data?

a database with addresses, phone numbers, and post codes

Which of these is NOT one of the main skills embodied by data scientists?

access to large data sets

quantitative measurement

are usually described by numbers and are measured on a continuous, ordered scale; they're things like height, weight and blood pressure.

qualitative variables

are, unsurprisingly, information about qualities. They are things like country of origin, sex, or treatment group. They're usually described by words, not numbers, and they are not necessarily ordered.

What are the main skills embodied by data scientists?

hacking skills, math and stats knowledge, and substantive expertise

What is the most important thing in Data Science?

the question you are trying to answer

Which is NOT one of the three V's of Big Data?

vibrant visible vital

Which is NOT one of the three V's of Big Data?

vibrant,vital, and visible

Which is one of the three V's of Big Data?

volume velocity variety

Which of these is an example of a quantitative variable?

weight height or color