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Statistics I — Quiz 2 weeks 1–8 prep
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Statistics I — Quiz 2 weeks 1–8 prep
611 words
3 min read
2026-08-16
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Now · Week 1 — data & measurement scales {#week-1}
Statistics I · Quiz 2 weeks 1–8
Part of the Quiz 2 prep system. Interactive patterns: Pattern atlas.
Week 1 — data & measurement scales {#week-1}
Focus: cases, variables, nominal/ordinal/interval/ratio
Case → variable → type → scale → valid operations
Pattern snapshot
| Level | Pattern |
|---|---|
| Easy | Classify variable |
| Medium | Cases vs variables |
| Hard | Scale traps in news |
Week 2 — categorical data {#week-2}
Focus: frequency, relative frequency, graphs
Categories → counts → relative frequency → bar/pie chart choice
Pattern snapshot
| Level | Pattern |
|---|---|
| Easy | Frequency table |
| Medium | Choose chart |
| Hard | Missing category |
Week 3 — numerical data {#week-3}
Focus: mean, median, spread, five-number summary
Sort → center (mean/median) → spread → five-number → boxplot read
Pattern snapshot
| Level | Pattern |
|---|---|
| Easy | Mean and median |
| Medium | Five-number summary |
| Hard | Outlier effect |
Week 4 — association {#week-4}
Focus: contingency tables, scatterplots, correlation
Two variables → table or scatter → pattern → correlation strength
Pattern snapshot
| Level | Pattern |
|---|---|
| Easy | Read contingency cell |
| Medium | Describe scatter |
| Hard | r interpretation |
Week 5 — counting {#week-5}
Focus: addition vs multiplication rule, factorials
Events → addition OR → multiplication AND → factorial arrangements
Pattern snapshot
| Level | Pattern |
|---|---|
| Easy | OR count |
| Medium | AND stages |
| Hard | Factorial setup |
Week 6 — permutations & combinations {#week-6}
Focus: order matters?, nPr, nCr
Order matters? → permutation → combination → formula pick
Pattern snapshot
| Level | Pattern |
|---|---|
| Easy | Order test |
| Medium | Compute nCr |
| Hard | Multi-step select |
Week 7 — probability {#week-7}
Focus: sample space, union, complement, disjoint events
Sample space → event → rules → union/complement → disjoint add
Pattern snapshot
| Level | Pattern |
|---|---|
| Easy | Complement |
| Medium | Disjoint union |
| Hard | Counting probability |
Week 8 — conditional probability & bayes {#week-8}
Focus: P(A|B), independence, total probability, Bayes
Condition given → P(A|B) → independence check → Bayes flip
Pattern snapshot
| Level | Pattern |
|---|---|
| Easy | Read P(A |
| Medium | Independence test |
| Hard | Bayes update |
Original retrieval lab
Pick any week you have not opened this week. Close the note, write its map line from memory, then reopen and fix one word.
Four retrieval checks
- Name one easy pattern family for week 1 and week 8.
- State one trap that appears in both weeks 3 and 6 for this course.
- Link one abstract pattern from the cross-course map to this course.
- Open the exam-eve sprint and complete the block for this course.
Linked References
Ref [1]
Statistics I · Week 1 — Data & measurement scales
Ref [2]
Statistics I · Week 2 — Categorical data
Ref [3]
Statistics I · Week 3 — Numerical data
Ref [4]
Statistics I · Week 4 — Association
Ref [5]
Statistics I · Week 5 — Counting
Ref [6]
Statistics I · Week 6 — Permutations & combinations
Ref [7]
Statistics I · Week 7 — Probability
Ref [8]