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

- 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

- 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.

- 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.

- 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.

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