# Statistical Measures

Scheme of work: GCSE Higher: Year 9: Term 1: Statistical Measures

#### Prerequisite Knowledge

• Interpret and present discrete and continuous data using appropriate graphical methods, including bar charts and time graphs.
• Solve comparison, sum and difference problems using information presented in bar charts, pictograms, tables and other graphs.

#### Success Criteria

• Interpret, analyse and compare the distributions of data sets from univariate empirical distributions through:
• Appropriate graphical representation involving discrete, continuous and grouped data
• Appropriate measures of central tendency (median, mean, mode and modal class) and spread
• Construct and interpret stem and leaf diagrams
• Apply statistics to describe a population

#### Key Concepts

• A frequency table is used when the sample size increases beyond simple calculations being possible from a list.
• The median average of a class width is used as the mid-pint when calculating the mean from grouped data.

#### Common Misconceptions

• Students often find it difficult to calculate the median average from data presented in a frequency table.
• When sorting continuous data into a grouped data table students often struggle to fully understand the inequality notation.

## Statistical Measures Resources

### Mr Mathematics Blog

#### Planes of Symmetry in 3D Shapes

Planes of Symmetry in 3D Shapes for Key Stage 3/GCSE students.

Use isometric paper for hands-on learning and enhanced understanding.

#### GCSE Trigonometry Skills & SOH CAH TOA Techniques

Master GCSE Math: Get key SOH-CAH-TOA tips, solve triangles accurately, and tackle area tasks. Ideal for students targeting grades 4-5.

#### Regions in the Complex Plane

Explore Regions in the Complex Plane with A-Level Further Maths: inequalities, Argand diagrams, and geometric interpretations.