Marketing Data (AQA A Level Business): Revision Note

Market size and share

• Businesses collect and analyse a wide range of data to understand their position in the market and make better-informed decisions

• Marketing data provides quantitative information about sales performance, market position and the effectiveness of marketing activities

Market size

• Market size is the total value or volume of all sales made within a particular market over a given period

• It can be measured in two ways:

  • By value - the total money spent across the market (£)

  • By volume - the total number of units sold

• A large market offers significant sales potential but typically attracts strong competition

• Monitoring market size over time reveals whether the market is growing, stable or declining - essential context for any business decision

• Market size can shrink even as individual businesses grow, so total market trends should always be considered alongside a firm's own performance

Size of market segments

• A market segment is a distinct group of customers within a broader market who share similar characteristics

  • For example, age group, income level, location or buying behaviour

• Calculating the size of a segment helps businesses identify which parts of the market are most valuable or growing most quickly

• Segment size can be measured by value or volume, using the same approach as total market size

Formula

$\mathrm{Segment}\mathrm{size}=\frac{\mathrm{Segment}\mathrm{sales}}{\mathrm{Total}\mathrm{market}\mathrm{sales}}\times 100$

• A large segment offers significant revenue potential

  • However, it will typically attract strong competition from rival businesses targeting the same customers

• A fast-growing segment may be worth targeting even if it is currently small

  • Early entrants can secure market share before competition intensifies

• Comparing segment sizes helps a business decide which customer groups to prioritise in its marketing strategy and where to allocate its marketing budget most effectively

Market share

• Market share is the proportion of total market sales held by one business, expressed as a percentage

• Again, it can be measured by value or volume

Formula

$\mathrm{Market}\mathrm{share}=\frac{\mathrm{Business}\mathrm{sales}}{\mathrm{Total}\mathrm{market}\mathrm{sales}}\times 100$

• A rising market share indicates the business is growing faster than the market and outperforming rivals

• A falling market share is a warning signal

  • Even if sales are rising in absolute terms, the business may be losing ground to competitors

• High market share gives a business greater bargaining power with suppliers and may allow it to benefit from economies of scale

  Very high market dominance can attract scrutiny from the Competition and Markets Authority (CMA)

Market and sales growth

• Market growth is the percentage increase in total market size over a given period

• Sales growth is the percentage increase in a single business's own sales over the same period

Formula

$\mathrm{Growth}\mathrm{rate}=\frac{\mathrm{Current}\mathrm{year}\mathrm{figure}–\mathrm{Previous}\mathrm{year}\mathrm{figure}}{\mathrm{Previous}\mathrm{year}\mathrm{figure}}\times 100$

• Comparing a business's sales growth rate to the overall market growth rate reveals whether it is gaining or losing market share

• Rapid market growth attracts new entrants, increasing competition over time

  • Early entrants should not assume their position is secure

• A business can show positive sales growth while still losing market share if the market is growing faster than its own sales

• Declining market growth may signal the need to diversify before sales begin to fall

Sales data

• Sales data refers to detailed records of a business's sales performance, broken down by category

  • For example, by region, product line or individual store

• It enables businesses to identify where sales are strongest or weakest and make targeted decisions

Formula

$\mathrm{Sales}\mathrm{contribution}=\frac{\mathrm{Sales}\mathrm{of}\mathrm{specific}\mathrm{segment}}{\mathrm{Total}\mathrm{sales}}\times 100$

• Sales data can identify which regions, products or stores are performing strongly and which are underperforming

• It can highlight seasonal patterns and trends that can inform production planning, staffing and stock decisions

• It allows marketing budgets to be allocated more effectively, directing investment towards high-performing or high-potential areas

• Underperforming segments can be investigated and addressed before they have a significant impact on overall performance

Return on marketing spend

• Return on marketing spend (ROMS) measures how much profit a business generates for every pound spent on marketing activities

Formulae

$\mathrm{ROMS}\left(\mathrm{ratio}\right)=\frac{\mathrm{Revenue}\mathrm{generated}\mathrm{by}\mathrm{marketing}}{\mathrm{Marketing}\mathrm{spend}}=?:1$

$\mathrm{ROMS}(\%)=\frac{\mathrm{Revenue}\mathrm{generated}–\mathrm{Marketing}\mathrm{spend}}{\mathrm{Marketing}\mathrm{spend}}\times 100$

• A ROMS ratio above 1, or a positive percentage, means the campaign generated more revenue than it cost

  • The higher the figure, the more effective the spend

• Results should be compared with previous campaigns and industry benchmarks to provide meaningful context

• However, attributing sales to a specific campaign is difficult when multiple marketing channels are used at the same time

• ROMS reflects short-term revenue impact and may not capture the long-term value of brand-building

Sales volume and sales value

• Sales volume is the number of units sold over a given period

• Sales value is the total revenue generated from those sales over the same period

Formula

$\mathrm{Sales}\mathrm{value}(\pounds )=\mathrm{Sales}\mathrm{volume}\left(\mathrm{units}\right)\times \mathrm{Price}\mathrm{per}\mathrm{unit}(\pounds )$

• Sales volume and sales value do not always move in the same direction:

  • Cutting prices may increase volume but reduce value if the price fall is not offset by higher sales

  • Raising prices may reduce volume but increase value if demand is relatively price inelastic

• Tracking both measures together gives a fuller picture of sales performance than either measure alone

• Businesses targeting premium markets may prioritise sales value

• Those focused on market share or production efficiency may prioritise sales volume

• A widening gap between volume and value trends can indicate a change in pricing strategy or customer behaviour that requires further investigation