2. Why data scientist prefers using Hexplot instead of Scatter plot? 3. Choose the correct answer swhich chart should be used to display relationship between age \& chol in heart disease dataset: i. Line charts ii. Histogram iii. Bar chart iv. Scatter plot 4. Write a python code to display relationship between age \& chol in heart disease dataset : Question 4: (3 Points) (CLO\#:2.2) (SO\#: 3-4) Answer only 6 points from following 7 points \# The following code load the following table2 into Pandas DataFrame import pandas as pd data = pd.read_csv('test2.csv") 1. Calculate the mean \& standard deviation of the column X of DataFrame in table2 mean = = \begin{tabular}{|l|r|} \hline & x \\ \hline 0 & 10 \\ \hline 1 & 3 \\ \hline 2 & 3 \\ \hline 3 & 4 \\ \hline 4 & 5 \\ \hline 5 & 7 \\ \hline \end{tabular}