# Collecting Data

Scheme of work: GCSE Foundation: Year 10: Term 2: Collecting Data

#### Prerequisite Knowledge

• Interpret and construct statistical diagrams for discrete and continuous data and know their appropriate use.
• 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

#### Success Criteria

• Infer properties of populations or distributions from a sample whilst knowing the limitations of sampling.
• apply statistics to describe a population
• Interpret, analyse and compare the distributions of data sets from univariate empirical distributions through appropriate graphical representation involving discrete, continuous and grouped data.

#### Key Concepts

• Students need to understand the benefits of using two-way tables to exhaustively cover each outcome for multiple events and use them to calculate probabilities.
• When designing questionnaires students need to consider time periods, multiple check boxes which do not overlap and the need to collect a wide ranging sample to reduce bias.
• It is important to recognise the different statistical techniques that are used to analyse and represent qualitative, quantitative, discrete and continuous data.

#### Common Misconceptions

• Students often have difficulty designing two-way tables.
• When designing questionnaires common errors include:
• No time period
• Overlapping responses
• Lack of ‘none’ or ‘other’ option.
• Check boxes with unequal widths.
• Double negative questions.
• Students often try to represent continuous data using methods that are only applicable for discrete sets.

## Collecting Data Resources

### Mr Mathematics Blog

#### Regression, Correlation and Hypothesis Testing

A-Level Scheme of work: Edexcel A-Level Mathematics Year 2: Statistics: Regression, Correlation and Hypothesis Testing

#### 3D Vectors – Year 2

A-Level Scheme of work: Edexcel A-Level Mathematics Year 2: Pure 2: 3D Vectors

#### Parametric Equations

Edexcel A-Level Mathematics Year 2: Pure 2: Parametric Equations