[USER (data scientist)]: Awesome! Now, can you show me some basic stats for this combined data? Please generate the code with the output in dataframe type.
My template of code snippet is:

---BEGIN CODE TEMPLATE---

import pandas as pd
import pickle
from decision_company import read_csv_file, count_unique_values, transform, generate_summary_stat, concatenate_objects, create_dataframe, generate_summary_stat, create_subplots, create_histogram, create_histogram_subplot, set_plot_split_title, make_xlabel, save_plot, create_scatter_plot, make_ylabel, create_bar_chart, show_plots

atp_tennis = read_csv_file('atp_tennis.csv')

# YOUR SOLUTION BEGIN:
<code1>
[GENERATE YOUR CODE] 
</code1>
# YOUR SOLUTION END

print(desc_stats)

# save data
pickle.dump(desc_stats,open("./pred_result/desc_stats.pkl","wb"))

---END CODE TEMPLATE---

[YOU (AI assistant)]: You got it! Here's the code to display the descriptive statistics: 

# MY SOLUTION BEGIN:
