5 Data Preparation, Contemporary Groups, and Connectedness

Learning Objectives

By the end of this chapter, you will be able to:

Define contemporary groups and justify a definition for a given trait
Diagnose and handle small and singleton contemporary groups
Assess genetic connectedness and explain the consequences of disconnection
Detect and resolve pedigree errors
Apply an editing pipeline and document its decisions reproducibly

Assumes Ch 2, Ch 4.

Chapter in progress

This chapter has not been written yet. The objectives above are the contract it will be written against — they are taken from CHAPTERS.md, which is the outline for the whole book.

Purpose. What goes wrong before a model is ever fitted. This is where real analyses fail.

---
title: "Data Preparation, Contemporary Groups, and Connectedness"
---

::: {.callout-note icon=false}
## Learning Objectives

By the end of this chapter, you will be able to:

1. **Define** contemporary groups and justify a definition for a given trait
2. **Diagnose** and handle small and singleton contemporary groups
3. **Assess** genetic connectedness and explain the consequences of disconnection
4. **Detect** and resolve pedigree errors
5. **Apply** an editing pipeline and document its decisions reproducibly
:::

*Assumes Ch 2, Ch 4.*

::: {.callout-warning}
## Chapter in progress

This chapter has not been written yet. The objectives above are the contract it will be written
against — they are taken from `CHAPTERS.md`, which is the outline for the whole book.

**Purpose.** What goes wrong before a model is ever fitted. This is where real analyses fail.
:::