MCAP Grade 8 Statistics and Probability. Practice it free.

Measures patterns of association in bivariate data. This Grade 8 reporting domain maps to 2 practice skills and 8 representative questions from the playable bank.

Grade 8Content Subclaim2 mapped skills
What the test measures

Statistics and Probability skills

  1. 8.SP.A Investigate patterns of association in bivariate data.

Standards basis

Maryland College and Career Ready Standards for Mathematics (MCCRSM) — Maryland

How the MCAP reports it

MCAP is Maryland's statewide successor to PARCC, built on the Maryland College and Career Ready Standards for Mathematics (which mirror CCSS-M) — it is not a Smarter Balanced administration despite the claims-style family resemblance. Each grade/course High Level Blueprint (September 2022) organizes the assessment into three subclaims: Content (23-24 one-point machine-scored items, listed per domain/conceptual category as MCCRSM cluster headings), Reasoning (6 items), and Modeling (6 items), the latter two defined by per-grade evidence statements and including constructed-response items. Cluster headings are transcribed verbatim from the blueprints, including their minor typographical deviations from the parallel CCSS-M headings; two evident misprints are normalized (a duplicated sentence fragment on 4.OA.C, and the domain codes printed as G.P.E / T.TF for G.GPE / F.TF). Since March 2025, grade 6-7 students enrolled in a high-school mathematics course may take the corresponding MCAP course assessment instead of the grade-level test.

Blueprint & weighting

Each High Level Blueprint (September 2022) publishes per-domain operational item counts. Content Subclaim (1-point machine-scored items): Grade 3 — OA 7, NBT 2, NF 7, Measurement 5, Geometry 2 (23 items); Grade 4 — OA 4, NBT 5, NF 10, Measurement 3, Geometry 1 (23); Grade 5 — OA 2, NBT 6, NF 9, Measurement 4, Geometry 2 (23); Grade 6 — RP 3, NS 8, EE 8, Geometry 2, SP 2 (23); Grade 7 — RP 8, NS 4, EE 5, Geometry 3, SP 3 (23); Grade 8 — NS 2, EE 10, Functions 5, Geometry 4, SP 2 (23); Algebra I — Number and Quantity 1, Algebra 12, Functions 9, Statistics 2 (24); Geometry — G.CO 7, G.SRT 8, G.C 3, G.GPE 3, G.GMD 1, G.MG 1 (23); Algebra II — Number and Quantity 3, Algebra 8, Functions 11, Statistics 1 (23). Every assessment adds 6 Reasoning Subclaim and 6 Modeling Subclaim operational items — four 1-point machine-scored each, plus two constructed-response items (two 3-point in grades 3-4; one 3-point and one 4-point in grades 5-8; two 4-point in Algebra I, Geometry, and Algebra II) — so a form carries 35 operational items (36 for Algebra I).

Try it now

8 free questions · 0/0 correct

Practice playeasy

A trend line for hours studied xx and quiz score yy is y=4x+62y = 4x + 62. What score does the line predict for a student who studies 33 hours?

Substitute x=3x = 3: y=4(3)+62=12+62=74y = 4(3) + 62 = 12 + 62 = 74.

Practice playeasy

A two-way table has rows Bus/Walk and columns 6th/7th: Bus&6th=12, Bus&7th=8, Walk&6th=4, Walk&7th=16. What fraction of all surveyed were Bus and 6th? Simplify.

1240=310\dfrac{12}{40} = \dfrac{3}{10}.

Practice playeasy

A trend line predicts that a bakery will sell 7575 bagels on Monday. The bakery actually sells 7979 bagels. What is the residual (actual value minus predicted value)?

Residual == actual - predicted =7975=4= 79 - 75 = 4.

Practice playeasy

A two-way table has rows Chess/Art and columns 7th/8th: Chess&7th=9, Art&7th=4, Art&8th=11. The Chess row total is 15. How many students are Chess&8th?

Chess row total minus the known Chess cell: 159=615-9=6.

Practice playeasy

A line of best fit relating hours of practice xx to free throws made yy is y=6x+10y = 6x + 10. According to the line, each additional hour of practice adds about how many free throws?

The slope of y=6x+10y = 6x + 10 is 66: the predicted change in free throws for each extra hour of practice.

Practice playeasy

A two-way table has rows Bike/Scooter and columns Morning/Afternoon: Bike&Morning=11, Bike&Afternoon=7, Scooter&Morning=5. In all, 29 trips were recorded. How many trips are Scooter&Afternoon?

The three known cells sum to 11+7+5=2311+7+5=23, so the missing cell is 2923=629-23=6.

Practice playeasy

A trend line for the daily high temperature xx in degrees and cups of lemonade sold yy is y=2x60y = 2x - 60. For a predicted 100100 cups sold, what should the temperature be?

Solve 100=2x60100 = 2x - 60: 2x=1602x = 160, so x=80x = 80 degrees.

Practice playeasy

A two-way table has rows Dog/Cat and columns Boys/Girls: Dog&Boys=10, Dog&Girls=6, Cat&Boys=5, Cat&Girls=9. How many were surveyed in total?

Add all cells: 10+6+5+9=3010+6+5+9=30.

Keep practicing

Turn statistics and probability into game time.

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