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Student Exam
EDITABLEFeedback:
Question 1 — Inclined Plane (30 pts): 30/30
Free body diagram is complete with all three forces correctly identified and labeled. The decomposition into components was handled cleanly. Excellent work.
Question 2 — Energy & Kinematics (35 pts): 28/35
Energy conservation is correct and h = 11.5 m is right. However, the v-t graph is drawn as a curve when it should be a straight line. Under constant gravitational acceleration, v(t) = v₀ − gt is linear. Review Section 3.4 on uniformly accelerated motion to see why constant acceleration always produces a linear v-t graph (−7 pts).
Question 3 — Atwood Machine (35 pts): 35/35
Clear diagram. Newton's 2nd law applied correctly to each mass, then combined to eliminate T. Both a and T correct.
Grady's Feedback
From python notebooks to handwritten exams, Grady can evaluate all student assignments and all course subjects. Here are a few examples:
MKT 350 – Midterm Exam: Market Analysis and Strategy
EditableFeedback:
Part I – Multiple Choice (30 points)
26/30 – Most answers were correct, with minor errors on questions related to Porter’s Five Forces and pricing strategy.
Total Q1: 26/30
Part II – Short Answer (40 points)
33/40 – Generally well-handled. The response on Porter’s generic strategies contained a notable inaccuracy by substituting “First mover” for “Focus,” which impacted the score.
Total Q2: 33/40
Q20. SWOT (10 points)
10/10 – Your SWOT analysis for GreenTech Innovations is comprehensive, with at least two relevant items in each category—Strengths (cost/energy value, patent protection), Weaknesses (brand recognition, limited funds), Opportunities (market growth, unserved market share), and Threats (incumbent power, future tech imitation). The analysis aligns well with case facts.
Total Q3: 10/10
Q21. Target Segment (10 points)
10/10 – You recommended targeting cost-conscious homeowners and provided a strong justification based on GreenTech’s 40% cost reduction, the segment’s large market share, lower brand loyalty, and alignment with limited VC funding. The rationale also considers alternative marketing channels, demonstrating a thoughtful application of case details.
Total Q4: 10/10
Q22. Pricing Strategy (10 points)
9/10 – Your recommendation for penetration pricing is clear and supported by case facts, such as attracting cost-conscious homeowners, gaining market share, and leveraging the patent protection period. You also note the potential for organic marketing benefits. However, a brief comparison with price skimming, including pros/cons or margin trade-offs, would add depth to the analysis.
Total Q5: 9/10
Overall Comment:
Your submission reflects a strong understanding of marketing strategy concepts and their practical application, particularly in the case analysis section where you effectively tied theoretical frameworks to the GreenTech scenario. In the multiple-choice section, most answers were correct, with minor errors on questions related to Porter’s Five Forces and pricing strategy. The short answer section was generally well-handled, though the response on Porter’s generic strategies contained a notable inaccuracy by substituting “First mover” for “Focus,” which impacted the score. The case analysis was a highlight, with clear and logical recommendations supported by case details, though a bit more depth in discussing pricing alternatives could enhance the response. Overall, this is a commendable effort with minor areas for improvement in precision and elaboration on certain theoretical components.
Total Score for Part I: 26/30
Total Score for Part II: 33/40
Total Score for Part III: 29/30
Overall Score: 26 + 33 + 29 = 88/100
Overall Score: 26+33+10+10+9 = 88/100
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Grade Distribution
Performance
Class Performance Summary
The class performed well overall on the Calculus II midterm, with a mean score of 84/100 and a median of 85/100. Students demonstrated strong competence in integration by substitution (Q1) and partial fraction decomposition (Q3). The primary area of difficulty was integration by parts (Q2), where 12 of 23 students made sign errors during evaluation — suggesting a procedural gap rather than a conceptual one. Graph labeling (Q4) was another common weakness, with 8 students omitting axis labels entirely.
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Its grading is broadly similar to human grading, and its ability to generate a marking rubric was excellent—in some cases more effective than a human’s. I think the core of what it is doing is amazing.
Alexander Paulin
UC Berkeley
Associate Teaching Professor of Mathematics
Overall the grading quality is impressive. The feedback that is provided is clear, helpful and should promote student learning.
Nakul Verma
Columbia University
Senior Teaching Faculty of Computer Science
I am very impressed. I believe Grady is more accurate than myself or any of my undergrad TAs and the amount of feedback given is more than I or my TAs would be reasonably able to provide.
Tim Carpenter
The Ohio State University
Senior Lecturer, Computer Science and Engineering