Hard Skills Midterm 100+

When grouping data for analysis, which of the following is most important?

• Dividing data randomly for analysis

• Grouping based on time series data

• Grouping by relevant categories, such as customer demographics

• Aggregating unrelated data points

Which of the following is an example of a derived variable?

• Sales data

• Customer segmentation

• Customer Lifetime Value

• Mean and median

Which of the following statistical methods is typically used for hypothesis testing?

• Chi-square test

• Regression analysis

• Descriptive statistics

• Pivot tables

Which statistical method is useful for summarizing the central tendency of data?

• Hypothesis testing

• Clustering

• Regression analysis

• Descriptive statistics

Which technique is used to handle missing data in a dataset?

• Hypothesis testing

• Mean imputation

• Clustering

• Regression analysis

Which type of finding should be prioritized in data analysis?

• General findings that may not be directly actionable

• Insights that provide the most value to the company

• Data that is most easily available

• Trends that are easily spotted

Why should complex statistical concepts be simplified for stakeholders?

• Complex terms add more value to the presentation

• Not all stakeholders are data-savvy

• Real-world examples should always be excluded

• Stakeholders prefer raw data

Why should outliers be carefully reviewed during data cleaning?

• To improve the format of pivot tables

• To determine if they are valid or should be excluded

• To directly influence customer retention strategies

• To ensure data visualizations are effective

How do brands use predictive analytics for personalization?

• They predict future consumer behavior based on past data.

• They limit personalization to customer service interactions.

• They focus on reducing the amount of data collected.

• They eliminate the need for personalized product recommendations.

How has artificial intelligence influenced marketing strategies?

• It has enhanced the way businesses operate, their nature, and the level of customer service.

• It involves the use of visual design tools to measure customer loyalty.

• It is intended to gain a larger audience on social media platforms.

• It aims to increase production costs and adjust pricing strategies.