What is the type of a column from a Pandas dataframe object? Select one: a. A Nu

Question

What is the type of a column from a Pandas dataframe object?

Select one:

a. A Numpy array.

b. A Pandas dataframe object.

c. A list.

d. A Pandas series object.

e. A set.

Can you apply string operations to a column of a dataframe object?

Select one:

a. Yes

b. No

Suppose we have a dataframe object named df, and two selection conditions: cond1, cond2. How do we extract the rows from df that satisfy either cond1 or cond2?

Select one:

a.

b.

c.

d.

e.

Suppose we have two Pandas dataframe objects named df1, df2. Which of the following is a valid command that joins the two dataframes together? Suppose we have already imported the Pandas module as pd.

Select one:

a.

b.

c.

d.

e.

Assume that we have a dataframe object called spam, and that the following command has been issued:

How would we create a plot that plots the first column of data against the column of data named psfMag_r?

Select one:

a.

b.

c.

d.

Explanation / Answer

1. d)a pandas series object, each column in a pandas dataframe object acts as a pandas series object

2. a) Yes, string operations can be applied to a column of Data Frame objects

3. c) df(cond1 or cond2); will help you extract rows that satisfy condition 1 and 2

4. d) pd.concat([df1,df2]) will concatenate the 2 dataframes df1 and df2 together

5. d) plot(spam[psfMag_r]) will plot the first column with column named psfMag_r

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