Exploratory Data Analysis

Quiz
•
Computers
•
Professional Development
•
Hard
Rajeswari AM
Used 11+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of exploratory graphs in data analysis?
Axes, legends, and other details are clean and exactly detailed.
They are typically made very quickly.
They are made for formal presentations.
Only a few are constructed.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If I want to save a plot to a PDF file, which of the following is a correct way of doing that?
Construct the plot on the PNG device with png(), then copy it to a PDF with dev.copy2pdf().
Construct the plot on the screen device and then copy it to a PDF file with dev.copy2pdf()
Open the screen device with quartz(), construct the plot, and then close the device with dev.off().
Open the PostScript device with postscript(), construct the plot, then close the device with dev.off().
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Data Analysis is a process of?
inspecting data
cleaning data
transforming data
All of the options
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many main statistical methodologies are used in data analysis?
2
3
4
5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In descriptive statistics, data from the entire population or a sample is
summarized with ?
integer descriptors
floating descriptors
numerical descriptors
decimal descriptors
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is true about hypothesis testing?
answering yes/no questions about the data
estimating numerical characteristics of the data
describing associations within the data
modeling relationships within the data
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of the following is true about exploratory data analysis?
answering yes/no questions about the data
estimating numerical characteristics of the data
describing associations within the data
modeling relationships within the data
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