What is incorrect about data outliers in a data frame?

they are the data points for me to manipulate the results

In the np.loadtxt() function, which description is incorrect

'datasets/earthquake.csv' is an absolute path

What does the unix command "ls" (or "dir" in Windows cmd) do?

lists the contents of a directory

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Week 5, File System, Path, Pandas

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Basics of computer file system, file paths, introduction to Pandas and data wrangling

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Questions 11

Answers

1
What is "NaN" in Python
Not a Number
one's grandmother
a very large integer
a string named NaN
2
Given the data frame "brics", how to access the row "CH"?
brics.CH
brics[CH]
brics.loc['CH']
brics['CH']
3
Which Pandas function removes NaNs in a data file?
rmnan()
dropna()
fillnan()
cut()
4
If I want to see only a couple of lines in the bottom of the file 'data.txt', what shall I do?
delete data.txt
cat data.txt
ls data.txt
tail data.txt
5
Which of the following is incorrect about Pandas
It's a Python function
It provides high-level data manipulation
It works well with NumPy
Dataframes are basic data types of Pandas
6
What is incorrect about data outliers in a data frame?
they are usually bad measurements
they can be non-physical data
they are the data points for me to manipulate the results
they are inappropriate for data analysis
7
which of the following is an absolute path (mac/linux)
./
/Users/loser/Desktop
../Desktop
Desktop/datasets
8
In the np.loadtxt() function, which description is incorrect
'datasets/earthquake.csv' is an absolute path
'datasets/earthquake.csv' is a relative path
'datasets' is a folder in my current working directory
'earthquake.csv' is the name of the data file
9
What does the unix command "ls" (or "dir" in Windows cmd) do?
reboot your computer
shows the current working directory
remove a file
lists the contents of a directory
10
Given the following data frame named "brics", how to access the column "Capital"
brics['capital']
brics[3]
brics[Capital]
brics.Capital
11
In the following data frame "yutu", how to filter the data points with Pressure less than 1000?
yutu.Pressure < 1000
yutu['Pressure (hPa)'] < 1000
yutu[Pressure (hPa)] < 1000
yutu < 1000

Week 5, File System, Path, Pandas Flashcards | StudBud