Statistics Cumulative Assessment 2 & Key

Master higher-tier data handling, combined means, and advanced probability with this challenging cumulative assessment worksheet! Following on from the first statistics assessment, this resource covers frequency tables, combined group means, complex sample spaces, expected and relative frequency, two-stage probability tree diagrams, and constructing data sets to fit strict criteria.

What is Included:

Section A: Short Answer
Evaluates harder core skills without relying on standard lists. This includes finding unknown values when a mean shifts with the addition of a new data point, calculating sample space probabilities for rolling two dice, working out missing probabilities from spinners, and computing expected frequencies from fractional probabilities.

Section B: Frequency Tables and Combined Data
Focuses on executing standard higher-tier procedures involving grouped or discrete frequency data. Students must calculate estimates of the mean from frequency tables, combine two separate data sets and their respective means into a single overall mean, and evaluate probabilities involving compound outcomes (such as unions of mutually exclusive events or combined sets).

Section C: Problem Solving
Guides students through intensive, multi-step statistical scenarios. Challenges involve estimating probabilities from quality control sample sizes, working backward from daily mean takings to find a missing day’s value, analyzing relative frequency data from repeated trials to comment on the fairness of a die, and constructing two-stage probability tree diagrams where a coin flip determines which bag of colored balls is sampled.

Section D: Reasoning
Requires students to provide clear statistical justifications and construct data sets from scratch. Topics include explaining the distinct information provided by the range versus the interquartile range when two data sets share the same mean, and constructing a complete set of numbers that satisfy multiple simultaneous constraints (such as a specific number of items, mode, median, range, and mean).

Teacher Benefits:

Comprehensive Higher-Tier Assessment: Includes structured questions specifically designed to test advanced data handling fluency, multi-stage tree diagrams, and rigorous statistical reasoning.

Curriculum Aligned: Perfect for secondary school mathematics courses preparing for higher-tier examinations. Directly supports advanced statistics and probability strand requirements for GCSE Higher tier and equivalent rigorous high school math curricula.

Ready to Print and Go: Zero preparation required. Excellent for structured classroom testing, summative end-of-unit assessments, targeted homework assignments, or independent revision for top-set students.

Scaffolded Complexity: Progresses logically from advanced core skills to complex two-stage probability trees and open-ended data construction tasks, allowing educators to precisely evaluate higher-order analytical capabilities.