Data Analytics Unit 3 Quiz

Which Python library is commonly used for creating scatter plots?

• NumPy
  

• Pandas

• Matplotlib

• SciPy

In Matplotlib, which function is used to create a scatter plot?

• plot()
  

• scatter()

• lineplot()

• bar()

How can you add a title to a scatter plot in Matplotlib?

• plt.title()

• plt.heading()

• plt.caption()

• plt.name()

What is the purpose of the alpha parameter in scatter()?

• To set the alignment of markers

• To control the transparency of markers

• To change the shape of markers

• To set the aspect ratio of the plot

Tags

NGSS.MS-PS3-1

What does the hue parameter in sns.scatterplot() control?

• Size of markers

• Transparency of markers

• Color of markers based on a categorical variable

• Style of the markers

Tags

NGSS.MS-PS3-1

What does the covariance between two variables indicate?

• The linear relationship between two variables

• Differences between two variables

• The average of the two variables

• The spread of the data

Which function in Pandas is used to compute the correlation coefficient matrix?

• cov()

• corr()

• correlation()

• matrix()

What is the range of the Pearson correlation coefficient?

• -∞ to +∞

• 0 to 1

• -1 to 1

• -1 to 0

What does a correlation value of -1 signify?

• Perfect positive correlation

• No correlation

• Perfect negative correlation

• Partial negative correlation

In Pandas, how do you calculate the covariance between two columns of a DataFrame?

• df.corr()

• df.cov()

• df.covariance()

• df.variance()