Exploratory Data Analysis

What is exploratory data analysis?

• A rigid framework by which we analyze data

• An initial way by which we can get a feel for data

• A type of purely quantitative method of data analysis

• A set of scientific principles for analyzing data in a categorical manner

Most often, EDA relies on _____.

• visual techniques

• assumptions

• fixed models

• testing for statistical significance

What is the role of exploratory graphs in data analysis?

• They are typically made very quickly.

• They are made for formal presentations.

• Only a few are constructed.

• xes, legends, and other details are clean and exactly detailed.

With reference to the EDA boxplot shown, the median is represented by which feature?

• Number 2

• Number 3

• Number 4

• Number 5

What is the Q1 of this data set?
6, 7, 2, 1, 5, 2, 1, 6

• 1
• 1.5
• 2
• 2.5

What is the Q3 of this data set?
6, 7, 2, 1, 5, 2, 1, 6

• 5
• 6
• 5.5
• 6.5

Which of the following lists all parts of the five number summary?

• Mean, Median, Mode, Range, and Total
• Minimum, Quartile 1, Median, Quartile 3, and Maximum 
• Smallest, Q1, Q2, Q3, and Q4
• Minimum, Maximum, Range, Mean, and Median

Given the data: 136, 150, 119, 150, 125, 143.
Find the upper quartile (Q3)

•  125
• 150
• 139.5
• 143

Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is Roger's median score?

• 127
• 155
• 156
• 193

When finding median and the middle has two numbers instead of one, what do you do?

• Take the higher number
• Take the lower number
• Take both
• Take the average