i-Ready Grade 7 Statistics and Probability Practice

Statistics and Probability skills

Use random sampling to draw inferences about a population

Draw informal comparative inferences about two populations

Investigate chance processes and develop, use, and evaluate probability models

Standards basis

Common Core State Standards (CCSS-M)-aligned domains; also aligned to state standards such as Virginia 2023 Mathematics Standards of Learning — national

How the i-Ready reports it

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.

Blueprint & weighting

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.

Official sources

Curriculum Associates: i-Ready Learning
Virginia Department of Education: 2023 Mathematics Standards

8 free questions · 0/0 correct

Practice playeasy

For two independent events, the probability of a head then a 4: $P(A)=\tfrac{1}{2}$ , $P(B)=\tfrac{1}{6}$ . Find $P(A \text{ and } B)$ as a simplified fraction.

Multiply: $P(A \text{ and } B) = \tfrac{1}{2} \times \tfrac{1}{6} = \tfrac{1}{12}$ .

Practice playmedium

A whole number from $1$ through $25$ is chosen at random. What is the probability that the number is a multiple of $4$ ?

The multiples of $4$ from $1$ to $25$ are $4, 8, 12, 16, 20,$ and $24$ , so $P = \dfrac{6}{25}$ .

Practice playeasy

A spinner has $8$ equal sections: $2$ are green and $6$ are yellow. What is the probability the spinner lands on green?

$P(\text{green}) = \dfrac{2}{8} = \dfrac{1}{4}$ .

Practice playeasy

The whole numbers $1$ through $50$ were each written on separate cards. Those $50$ cards were placed in a hat. One card will be randomly drawn from this hat. What is the probability that the card will show a number divisible by $5$ ?

Multiples of $5$ from $1$ to $50$ are $5, 10, 15, 20, 25, 30, 35, 40, 45, 50$ , giving $10$ favorable outcomes: $P = \tfrac{10}{50} = \tfrac{1}{5}$ .

Practice playeasy

What is the probability of rolling an even number on a die? Give a simplified fraction.

$P = \dfrac{\text{favorable}}{\text{total}} = \dfrac{3}{6} = \dfrac{1}{2}$ .

Practice playeasy

A spinner with $3$ equal sections is spun, and a standard six-sided die is rolled. How many outcomes are in the sample space?

A tree diagram starts with $3$ branches for the spinner. Each of those splits into $6$ die branches, so the sample space has $3 \times 6 = 18\textsf{.}$

Practice playeasy

A random sample of 20 contained 5 successes. What is the sample proportion (as a simplified fraction)?

Proportion $= \dfrac{5}{20} = \dfrac{1}{4}$ .

Practice playeasy

A game spinner has $8$ equal sections, exactly $2$ of which are blue. A fair coin is then flipped. What is the probability of landing on blue on the spinner and getting tails on the coin?

$P(\text{blue}) = \dfrac{2}{8} = \dfrac{1}{4}$ and $P(\text{tails}) = \dfrac{1}{2}$ . So $P(\text{both}) = \dfrac{1}{4} \times \dfrac{1}{2} = \dfrac{1}{8}$ .