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Fix 4 session 3 solutions - #8

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arnold-c merged 7 commits into
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fix-4-session-3-solutions
Jul 6, 2026
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Fix 4 session 3 solutions#8
arnold-c merged 7 commits into
mainfrom
fix-4-session-3-solutions

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@arnold-c arnold-c commented Jul 6, 2026

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arnold-c added 7 commits June 22, 2026 23:01
Add text explaining that the flu figure and table show active cases
as prevalence, while the final-size calculation uses cumulative
incidence.

State the boarding school size as N = 764 and the total outbreak cases
as Z = 512. Clarify that 512 is not read directly from a single value in
the prevalence figure or table.
Add a Day 1 interactive session page for modifying SIR
box-and-arrow diagrams. Use the same R diagram package style as the
existing R session materials, with starter and vaccination examples.

Link the new page from the book sidebar and workshop schedule. Include a
commented student template with arrow labels so students can adapt the
diagram structure and explain the assumptions behind their changes.
Add collapsible solution blocks for the R session 03 exercises so code
and rendered outputs can be hidden together. This keeps the worked
answers available without crowding the exercise flow.

Replace the Exercise 6 placeholder with fixed-initial-condition SIR
fits. Add reusable fitting code, parameter tables, and interpretation
for fixing S0, I0, or both during least-squares estimation.
Move the visible solution blocks directly under their corresponding
exercise prompts. Keep each solution collapsed with HTML details blocks
so learners can reveal answers in place without jumping to a separate
solutions section.

Adjust the early Niamey linear-regression solution to use a local
working copy. This avoids mutating the main dataset before later
sections build the course data objects.
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@arnold-c
arnold-c merged commit 0fdff4a into main Jul 6, 2026
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