Lesson 2: Basic data exploration

Question 1

P—– is the primary tool data scientists use for exploring and manipulating data

Answer 1

Pandas

Question 2

The most important part of the Pandas library is the D—-F—

Answer 2

DataFrame

A DataFrame holds the type of data you might think of as a table. This is similar to a sheet in Excel, or a table in a SQL database.

Question 3

How would you get the data in the file path “path-houses” into a DataFrame called “df-houses”

Answer 3

df-houses = pandas.read_csv(path-houses)

Question 4

How can you get a summary of the data held in the “df-houses” DataFrame

Answer 4

df-houses.describe()

Question 5

What is standard deviation?

Answer 5

Step 1: Find the mean.
Step 2: For each data point, find the square of its distance to the mean.
Step 3: Sum the values from Step 2.
Step 4: Divide by the number of data points.
Step 5: Take the square root.