# ASTR 476 Problem Set 01: Assessment Instructions

Scope: Lectures 01-02 — Redshift and expansion scales

Grade for scientific reasoning, dimensional correctness, evidence use, and reproducibility. Do not award full credit for a correct number without its method and assumptions.

## Rubric (100 points)

- Physical model and derivation: 25
- Numerical execution and units: 25
- Uncertainty, covariance, and limitations: 25
- Interpretation and communication: 15
- Reproducibility and source attribution: 10

## Grading protocol

For each question, identify the claimed quantity, verify equations and unit conversion, independently recompute at least one numerical result, and distinguish measured inputs from derived/model quantities. Apply consequential-error deductions once at the point of propagation rather than repeatedly. Accept equivalent correct methods when assumptions are explicit. Return question-specific feedback and invite a corrected resubmission; the original reasoning standard remains unchanged.