Question $1(50$ points$)$

Question $1$: CLO $1,2(50$ marks$).$

Note: Use Exeel for the caleulations while providing a detailed explanation of each step

for clarity.

A multinational company wants to assess the impact of its recent marketing campaign on

sales across different regions. They've collected sales dato before and after the campaign

launch. The dataset includes sales figures from various regions over a specific period.

Given the provided datoset, perform the following tosks:

Data Exploration $(10$ points$)$:

Describe the dataset's key features, including the variables and their types.

Present summary statistics and visualizations to provide an initial understanding of

the data.

Hypothesis Testing $(10$ points$)$:

Formulate a null and alternative hypothesis regarding the campaign's effect on

sales.

Choose an appropriate statistical test to analyze the hypothesis.

Perform the test and interpret the results.