TSA

Types of Question

"Doing data analysis requires quite a bit of thinking and we believe that when you’ve completed a good data analysis, you’ve spent more time thinking than doing." - Roger Peng

1. Descriptive - "seeks to summarize a characteristic of a set of data"
2. Exploratory - "analyze the data to see if there are patterns, trends, or relationships between variables" (hypothesis generating)
3. Inferential - "a restatement of this proposed hypothesis as a question and would be answered by analyzing a different set of data" (hypothesis testing)
4. Predictive - "determine the impact on one factor based on other factor in a population - to make a prediction"
5. Causal - "asks whether changing one factor will change another factor in a population - to establish a causal link"
6. Mechanistic - "establish how the change in one factor results in change in another factor in a population - to determine the exact mechanism"

Descriptive

• Which states have the highest onion production and sales?
• Which city (Mandi's) have the highest sales?
• What is the average price for Onion across a year in Bangalore?
• ...

Exploratory & Inferential

• Is there a large difference between High and Low prices of Onion in a day?
• What is the trend of onion price across days or months in Bangalore?
• How is the price on onion correlated with volume of onion?
• How is the export volume of onion correlated to domestic production volume?
• ...

Predictive

• What is the price of onion likely to be next day?
• What is the price of onion likely to be next month?
• What will be the sales quantity of onion tommorrow in Delhi?
• ...

Causal

• Does the change in production of onion have an impact on the onion prices?
• Does the change in rainfall in monsoon have an impact on onion prices?
• ...

Mechanistic

• How does change in onion production impact the price of onion?
• How does onion export volumes impact the prices of onion in local markets in India?
• ...

Questions we will attempt