You are preparing a data report for a company's regional sales. Use the provided sales_data dataset to create a clear summary table that highlights key statistics for each region.

• Calculate the total sales and average sales for each region.
• Organize your results in a summary table with columns: region, total_sales, and average_sales.
• Assign your summary table to a variable named summary_sales_table.
• Do not print or display the table; just create and assign it.
• Do not use the same code structure as shown in previous examples (avoid summarise(mean_value = mean(value))).
• Focus on clarity and concise presentation of the statistics.