i-Ready Grade 6 Statistics and Probability Practice

Statistics and Probability skills

Develop understanding of statistical variability

Summarize and describe distributions

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

A shipping clerk weighed $14$ packages. The frequency table shows each weight and how many packages had that weight.
$\begin{array}{c|c} \text{Weight (lb)} & \text{Number of packages} \\ \hline 2 & 3 \\ 7 & 2 \\ 12 & 5 \\ 17 & 2 \\ 22 & 2 \end{array}$

What is the median package weight?

There are $14$ weights. Listing every weight from least to greatest, the $7$ th and $8$ th values are both $12$ , so the median is $12$ pounds.

Practice playeasy

A class answered the statistical question "How many pages did you read this week?" The answers were $12, 15, 15, 18, 20, 15$ . How many students were interviewed?

Each answer in the list is one student. Count every value, including repeats: there are $6$ answers, so $6$ students were interviewed.

Practice playeasy

A student is writing questions about pets. Which of these is a statistical question?

A statistical question anticipates variability: many people or things can give different answers. "How many pets does each family on my street own?" asks about many families, so the numbers can differ. It is a statistical question.

Practice playmedium

Five test scores are $70$ , $78$ , $84$ , $90$ , and $96$ . One score is removed from the data set, but which score was removed is not stated. How does this affect the mean?

The mean of the five given scores can be found, but removing a different score changes the mean in different ways. Without knowing which score was removed, the effect cannot be determined.

Practice playeasy

Seven test scores are $70\textsf{,}$ $75\textsf{,}$ $88\textsf{,}$ $85\textsf{,}$ $90\textsf{,}$ $65\textsf{,}$ and $87\textsf{.}$ What is the mean score?

Mean $= \dfrac{70 + 75 + 88 + 85 + 90 + 65 + 87}{7} = \dfrac{560}{7} = 80$ .

Practice playeasy

Find the range of 10, 3, 15, 6.

Range $= \max - \min = 15 - 3 = 12$ .

Practice playeasy

The distances, in miles, run on seven days are $14\textsf{,}$ $6\textsf{,}$ $20\textsf{,}$ $9\textsf{,}$ $11\textsf{,}$ $18\textsf{,}$ and $6\textsf{.}$ What is the median distance?

In order, the values are $6\textsf{,}$ $6\textsf{,}$ $9\textsf{,}$ $11\textsf{,}$ $14\textsf{,}$ $18\textsf{,}$ $20\textsf{.}$ The median is the middle value, $11\textsf{.}$

Practice playeasy

A clinic recorded customer wait times, in minutes, for $16$ visits. The frequency table shows the results.
$\begin{array}{c|c} \text{Wait time (min)} & \text{Number of customers} \\ \hline 2 & 2 \\ 5 & 3 \\ 8 & 2 \\ 11 & 6 \\ 14 & 3 \end{array}$

What is the median wait time?

Expand to $16$ wait times: $2, 2, 5, 5, 5, 8, 8, 11, 11, 11, 11, 11, 11, 14, 14, 14$ . The $8$ th and $9$ th values are both $11$ , so the median is $11$ minutes.