Home/ Mathematics/ Year 7/ Unit 4

Unit 4: Data & Chance

Statistics and probability — collecting, displaying, summarising and interpreting data, and understanding chance.

20 Lessons
3 Checkpoints
1 Quiz
~10 hrs
Section 1 — Data Collection and Display
1
Types of Data
Categorical vs numerical, discrete vs continuous
2
Collecting Data
Surveys, observations, experiments, population vs sample
3
Frequency Tables
Tally marks, grouped data, totals
4
Bar Charts and Column Graphs
Drawing rules, axes, scales, key features
5
Pie Charts
Calculating angles, parts of a whole
6
Line Graphs
Data over time, trends, when to use
7
Stem-and-Leaf Plots and Dot Plots
Showing all values, shape of distribution
CP
Checkpoint 1
Lessons 1–7
Section 2 — Summary Statistics
8
The Mean
Arithmetic average, from frequency tables
9
The Median
Middle value, odd and even counts
10
The Mode and Range
Most common value, spread of data
11
Comparing Data Sets
Centre and spread, consistency
12
Interpreting Graphs
Reading trends, peaks, outliers
13
Misleading Graphs
Truncated axes, 3D effects, bias
14
Introduction to Probability
Events, outcomes, simple probability
CP
Checkpoint 2
Lessons 8–14
Section 3 — Probability
15
The Probability Scale
Fractions, decimals, percentages, words
16
Experimental Probability
Relative frequency, law of large numbers
17
Theoretical Probability
Equally likely outcomes, complementary events
18
Sample Space and Tree Diagrams
Listing outcomes, multiplication rule
19
Two-Stage Experiments
With and without replacement
20
Data and Chance Synthesis
Connecting data and probability
CP
Checkpoint 3
Lessons 15–20
QZ
Unit Quiz
All 20 lessons