Common Core State Standards (CCSS-M)-aligned domains; also aligned to state standards such as Virginia 2023 Mathematics Standards of Learning — national
i-Ready Grade 8 Statistics and Probability. Practice it free.
Measures bivariate data and scatter plots. This Grade 8 reporting domain maps to 2 practice skills and 8 representative questions from the playable bank.
What the test measuresStandards basis How the i-Ready reports it Blueprint & weighting Official sources
Statistics and Probability skills
Investigate patterns of association in bivariate data
i-Ready Diagnostic is a vendor-developed adaptive assessment, not a state test, but Curriculum Associates reports results and alignment against state standards such as Virginia SOL. The math coverage is organized by grade-level content domains that closely track Common Core-style strands rather than a single fixed claim structure.
No official per-domain blueprint or item-weight percentages were found on the official product page; i-Ready publishes adaptive diagnostic results and domain placements rather than a public fixed-item weight table.
Curriculum Associates: i-Ready Learning
Virginia Department of Education: 2023 Mathematics Standards
Try it nowPractice playeasy Practice playeasy Practice playeasy Practice playeasy Practice playeasy Practice playeasy Practice playeasy Practice playeasy
8 free questions · 0/0 correct
A trend line predicts that a bakery will sell bagels on Monday. The bakery actually sells bagels. What is the residual (actual value minus predicted value)?
Residual actual predicted .
A two-way table has rows Dog/Cat and columns Boys/Girls: Dog&Boys=10, Dog&Girls=6, Cat&Boys=5, Cat&Girls=9. What fraction of all surveyed were Dog and Boys? Simplify.
.
A line of best fit relating hours of practice to free throws made is . According to the line, each additional hour of practice adds about how many free throws?
The slope of is : the predicted change in free throws for each extra hour of practice.
A two-way table has rows Bus/Walk and columns 6th/7th: Bus&6th=12, Bus&7th=8, Walk&6th=4, Walk&7th=16. How many were surveyed in total?
Add all cells: .
A trend line for the daily high temperature in degrees and cups of lemonade sold is . For a predicted cups sold, what should the temperature be?
Solve : , so degrees.
A two-way table has rows Bus/Walk and columns 6th/7th: Bus&6th=12, Bus&7th=8, Walk&6th=4, Walk&7th=16. How many chose Bus in total?
Row total for Bus: .
A trend line for the number of car washes a club holds and the club's funds in dollars is . According to the line, how many dollars did the club have before holding any car washes?
At , dollars: the -intercept is the starting amount.
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.
.
Keep practicing
Turn statistics and probability into game time.
The i-Ready placement starts with this test's real coverage map and finds the right difficulty.
Source and test overview
Reporting categories
More Grade 8 domains
The Number SystemMeasures integer exponents, scientific notation, and irrational numbers.8 QsPractice →Expressions and EquationsMeasures linear equations, systems, and algebraic manipulation.8 QsPractice →FunctionsMeasures function concepts, linear relationships, and comparing functions.8 QsPractice →GeometryMeasures congruence, similarity, transformations, and Pythagorean theorem.8 QsPractice →