Pre-Quiz - Improving Graphs

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Which of the following is true for a correlation matrix?

1 point

Its element can take any positive value

Its elements can never be greater than -1

It is a symmetric matrix

All of the above

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Which of the following statement is true for the given boxplot?

2 points

None of then have any outliers

Median of Comedy is greater than that of Drama

Median of Drama is greater than Q1 of Comedy

Comedy has a greater interquartile range

Clear selection

Which of the following options can be used to slice 10th to 20th row (both inclusive) of a data frame df?

2 points

dfnew = df[9:20]

dfnew = df[10:20]

dfnew = df[10:21]

None of the above

Clear selection

Which of the following options are correct for a histogram?

2 points

It is used for visualizing continuous variable

The height of a bin cannot be equal to zero

It gives an idea of the skewness of the data

Bins are numbers that represent the intervals into which you want to group the data

Clear selection

Which of the following code can be used to represent a pie chart for the following data with the corresponding category name as a label? movies is the name of the data frame and matplotlib.pyplot has been imported as plt.

1 point

plt.pie(critics_counts)

plt.pie(critics_counts, labels=critics_counts.index.tolist())

plt.pie(critics_counts, labels=genre_counts)

All of the above

Clear selection

Which of the following pandas function can be used to read .csv files and do operations on it ? pandas has been imported as pd.

1 point

df = pd.csv("filename.csv")

df = pd.read_csv("filename.csv")

df = pd.read("filename.csv")

df = pd.readcsv("filename.csv")

Clear selection

In the following data frame named as df, which of the following code can be used to plot a bar chart between studio and imdb_rating ? matplotlib.pyplot has been imported as plt

1 point

plt.bar(df.studio, df.imdb_rating); plt.show()

df.plot.bar(x="studio", y="imdb_rating")

All of the above

None of the above

Clear selection

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