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Causal Inference Beginner-Intermediate Worksheet: Focus on common variations practice Causal Inference BEGINNER INTERMEDIATE

Level up your Causal Inference skills! You're at Worksheet 4 of 10 (33% through this series). This step-up challenge worksheet features 20 beginner-intermediate-level problems with a focus on common variations practice. Topics covered: causal inference for competitive exams, how to solve causal inference, causal inference tricks.

📝 Worksheet 4 of 10 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Beginner Intermediate level

What you'll learn in this worksheet:
Your progress through Causal Inference
Worksheet 4 of 10 (33% complete)

Question 1

Observation: Sales increased 40% after the advertising campaign What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: The advertising campaign likely caused increased sales

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 2

Observation: Students' test scores improved by 25% after hiring new teachers What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: New teachers likely contributed to score improvement

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 3

Observation: Crime rates fell after community policing was implemented What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: Community policing likely reduced crime

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 4

Observation: Patient recovery times shortened after the new treatment was introduced What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: The new treatment likely accelerated recovery

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 5

Observation: Plant growth increased by 60% after adding fertilizer What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: Fertilizer likely caused better plant growth

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 6

Observation: Water quality improved after the factory installed filters What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: The filters likely improved water quality

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 7

Observation: Customer complaints dropped by 70% after improving service training What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: Service training likely reduced complaints

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 8

Observation: Plant growth increased by 60% after adding fertilizer What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: Fertilizer likely caused better plant growth

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 9

Observation: Patient recovery times shortened after the new treatment was introduced What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: The new treatment likely accelerated recovery

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 10

Observation: Employee productivity increased after flexible work hours were introduced What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: Flexible hours likely improved productivity

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 11

Observation: Water quality improved after the factory installed filters What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: The filters likely improved water quality

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 12

Observation: Crime rates fell after community policing was implemented What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: Community policing likely reduced crime

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 13

Observation: Employee productivity increased after flexible work hours were introduced What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: Flexible hours likely improved productivity

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 14

Observation: Plant growth increased by 60% after adding fertilizer What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: Fertilizer likely caused better plant growth

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 15

Observation: Students' test scores improved by 25% after hiring new teachers What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: New teachers likely contributed to score improvement

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 16

Observation: Hospital readmissions decreased after implementing follow-up calls What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: Follow-up calls likely reduced readmissions

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 17

Observation: Water quality improved after the factory installed filters What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: The filters likely improved water quality

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 18

Observation: Hospital readmissions decreased after implementing follow-up calls What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: Follow-up calls likely reduced readmissions

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 19

Observation: Plant growth increased by 60% after adding fertilizer What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: Fertilizer likely caused better plant growth

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.

Question 20

Observation: Water quality improved after the factory installed filters What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: The filters likely improved water quality

However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.
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