Statistics and Data Analysis Quiz

What function is used to find the mean of a list of numbers in numpy?

• mode

• median

• average

• mean

Which package is used to read data from csv files?

• pandas

• matplotlib

• scipy

• numpy

What is the correct way to import the numpy package?

• numpy import

• import np

• import numpy as np

• np import

What will the mode function return if all values in the dataset are unique?

• The first value

• None

• An error

• The last value

Which function is used to find Karl Pearson’s coefficient of correlation?

• pearsonr( )

• kpearsonr( )

• spearmanr( )

• pearson( )

What is the output of a t-test?

Answer choices

• A z-value

• A sample size

• A t-statistic and a p-value

• A confidence interval

Which function in scipy.stats is used to perform a one-way ANOVA test in Python?

• chi2_contingency

• t_test
  

• f_oneway

• anova_lm

Which of the following Python libraries can be used to perform both ANOVA and Chi-Square tests?

• matplotlib
  

• scipy
  

• seaborn
  

• os

What does plt.show() do in matplotlib?

• Saves the plot as a file
  

• Displays the plot
  

• Sets the title of the plot

• Clears the plot

In matplotlib, which function is used to plot a line graph?

• plt.bar()
  

• plt.scatter()
  

• plt.plot()
  

• plt.hist()