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Revision Notes

OxfordAQA IGCSE Business: Business operations (9225) – Revision Notes

Condensed revision notes on production methods, JIT, Kaizen, suppliers, quality, TQM and customer service for OxfordAQA IGCSE Business.

Subject
Business
Level
IGCSE
Topic
Business operations
Updated

Aligned to OxfordAQA IGCSE Business (9225), First teaching September 2020, first examined May/June 2022. Official specification .

Syllabus page (what it covers and how it is assessed): OxfordAQA IGCSE Business.

Syllabus points this page covers

9225

  • 3 Business operations (whole topic)

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These notes condense section 3.3 Business operations of the OxfordAQA International GCSE Business (9225) specification, version 3.1, for exams from May/June 2022 onwards. For full explanations and worked examples, read the study guide. Then test yourself with the practice questions. The course hub, the printable checklist and the free diagnostics cover the rest of the course.

Topic map

Section Content in one line
3.3.1 Production processes Job, batch, flow, cell; efficiency through JIT and Kaizen
3.3.2 The role of procurement JIT and buffer stock; supplier choice (price, quality, reliability)
3.3.3 The concept of quality Expectations, measuring problems, consequences, TQM, costs and benefits, growth, outsourcing, franchising
3.3.4 Good customer services Product knowledge, engagement, post-sales; benefits and dangers; websites, e-commerce, social media

Stock control charts are not examined: the specification says you will not be asked to draw or interpret them.

3.3.1 Production processes

Method Definition Use when Watch for
Job One item made to order Unique or made-to-measure goods High cost per item, skilled labour
Batch Identical items made in groups, one group after another Several variants in set quantities Idle time between batches, stock build-up
Flow Continuous production of a standard product Very high demand for identical goods Expensive set-up, inflexible
Cell Small teams each making a whole part or product Medium volume, need for flexibility and teamwork Needs multi-skilled staff

Method to choose a method: ask how many items, how similar they are, how much customers want to specify, and how big the budget for equipment is.

Efficiency

  • Efficiency: more output from the resources used, or equal output from fewer resources, so unit cost falls.
  • JIT: little or no stock, materials arrive when needed.
  • Kaizen: continuous improvement, meaning many small changes put forward by employees at every level.
Job production makes one item to order at the highest cost per unit. Batch production makes groups with changeovers between them at medium cost. Flow production makes identical items continuously at the lowest cost per unit.
Job, batch and flow production compared by quantity and cost per unit.
A timeline of an 8-hour oven shift: three 2-hour batches of 240 loaves separated by two 30-minute changeovers, using 7 hours and leaving 1 hour unused. Output is 720 loaves and the oven is idle during each changeover.
Batch production fits three batches in an 8-hour shift, but the oven is idle during changeovers.

3.3.2 The role of procurement

JIT versus buffer stock

Benefits Costs and risks
JIT Lower storage and holding costs, less cash tied up, less waste and damage More frequent deliveries, lost bulk-buying discounts, production stops if a delivery is late
Buffer stock Spare stock to meet unexpected demand or cover late deliveries Storage, insurance, risk of damage or going out of date, cash tied up

Evaluate JIT for a given business: weigh the savings against extra delivery cost and lost economies of scale, then check reliability of suppliers and how predictable demand is.

Two columns compare JIT extra costs (1,800 deliveries plus 1,440 lost discount, 3,240) with the 216 buffer holding cost saved. The net extra cost of JIT is 3,024 a year.
On these figures JIT costs the bakery 3,024 a year more.

Choosing a supplier

Factor Question to ask
Price What is the total cost once delivery, discounts and credit terms are included?
Quality Are materials good enough to avoid faults and returns?
Reliability Does it deliver the right goods on time, every time?

Formula reminder (standard form): cost per usable unit = price / (1 - proportion unusable).

Worked reminder. Price 3.60 with 10% unusable: 3.60 / 0.90 = 4.00 per usable unit. A rival at 3.90 with 2% unusable: 3.90 / 0.98 = 3.98. The dearer-looking price is cheaper per usable unit, by about 0.02.

Two grids of 100 metres show 5 wasted from Supplier A and 1 from Supplier B. Cost per usable metre is 4.21 for A and 4.24 for B, so A is about 0.03 cheaper unless late deliveries matter under JIT.
The cheapest price is not always the cheapest cost per usable metre.

3.3.3 The concept of quality

  • Quality means meeting customer expectations, which differ for goods (durability, safety, performance) and services (accuracy, speed, courtesy, consistency).
  • Identify problems by inspection, complaints, returns, reviews, surveys and staff reports.
  • Measure by percentage defective, return rate, complaints, repeat purchase and satisfaction scores.
  • Consequences of poor quality: refunds and replacements, lost sales, damaged reputation, lost loyalty, low staff morale, possible legal problems.

TQM

Total quality management: every employee in every department is responsible for quality, and faults are prevented at each stage instead of only being found at the end.

Advantages to a business Disadvantages
Fewer defects and less waste Training and time to introduce
Lower cost of rework and returns Needs commitment from managers
Greater customer loyalty and reputation Change of habits can meet resistance
Staff feel involved Benefits can take time to appear

Costs and benefits of quality

Costs Benefits
Better materials, training, equipment, checking Fewer returns, stronger reputation, loyalty, possibly higher prices
Returns cost 7,200 now. With a 5,000 programme returns cost 2,400, total 7,400. The 4,800 saving is 200 short of the programme cost in year one, before reputation gains.
On direct costs alone the programme is 200 short in year one.
40 customers (5% of 800) at 180 each is 7,200 kept, against a 6,000 help line, so the gain is 1,200, though the 5% is an estimate.
The help line keeps 7,200 of value for a 6,000 cost.

Quality as the business grows

  • Managers are further from daily work, so standards can slip.
  • Outsourcing: less direct control over the other firm’s standards; the business still gets the blame.
  • Franchising: one weak outlet can damage the brand; the franchisor needs standards, training and inspections.

Worked reminder. A quality scheme costs 2,000 and cuts returns from 500 to 150 items, each return costing 9. Saving = 350 x 9 = 3,150. Net gain = 3,150 - 2,000 = 1,150.

3.3.4 Good customer services

Method Example
Product knowledge Staff who can advise which model suits a customer’s needs
Customer engagement Friendly greeting, listening, quick problem handling
Post-sales services User training, help lines, servicing
Benefits of good service Dangers of poor service
Customer satisfaction and loyalty, repeat custom, good word of mouth Dissatisfied customers, poor reputation, lost sales

Good service has costs too: training, staff time and systems.

ICT and customer service

Tool Role
Websites Information, FAQs, order tracking, live chat at any hour
E-commerce Buying online at any time; wider market; needs delivery and returns to work
Social media Fast two-way contact and feedback; replies are public
Three methods of good service (product knowledge, customer engagement, after-sales service). Good service leads to a satisfied, loyal customer who spends more so profit rises. Poor service leads to an unhappy customer, bad word of mouth and falling revenue.
Good service builds loyalty and profit; poor service damages reputation and revenue.
A shop selling only to a few nearby customers inside a small dashed circle, then the same shop with a website reaching many customers spread widely. Labels say e-commerce affects marketing (wider markets) and operations (order fulfilment).
E-commerce lets a business reach customers well beyond its local area.

Applying the topic to a case study

Short answers earn credit for knowing a term. Longer answers need the term applied to the business in the stem, with a consequence and, for evaluation, a judgement.

Chain for analysis

Name the point, say what it does in this business, then say what that means for cost, sales, reputation or customers. For example: batch production lets a bakery change recipe between groups, so it can offer variety, but oven time is lost between batches, which raises cost per loaf.

Chain for evaluation

State the case for, state the case against, use a figure or fact from the stem, then decide and give the condition on which your decision depends. Useful conditions in this topic include how reliable suppliers are, how predictable demand is, how much customers pay for quality, and how large the business is.

Linking the four parts

  • Production method affects quality: flow production gives consistency, job production allows personal finish but varies more.
  • JIT needs reliable suppliers and high quality inputs, because there is no spare stock to cover faults.
  • Good customer service can offset a small quality problem, but cannot replace quality in the long run.
  • Growth through outsourcing or franchising makes TQM and clear standards more important.
  • Websites and social media create more chances to show good service and also more chances for complaints to be seen.

Must-know distinctions

  • Job versus batch: job is one item to a customer’s order, batch is a group of identical items.
  • Flow versus cell: flow is a continuous line for one standard product, cell is a team making a whole piece of work.
  • JIT versus buffer stock: JIT holds as little as possible, buffer stock is spare on purpose.
  • TQM versus inspection: TQM prevents faults at every stage, inspection finds them after.
  • Outsourcing versus franchising: outsourcing gives work to another firm, franchising lets others run outlets under your brand.

Quick self-test

  1. Name the production method suited to making a one-off wedding dress for a customer.
  2. Give one cost of using JIT.
  3. Define buffer stock.
  4. Price 5.00 with 20% unusable. Calculate the cost per usable unit.
  5. State two factors, other than price, in choosing a supplier.
  6. What does TQM stand for?
  7. Give two ways a business might measure quality.
  8. Why does franchising put quality at risk?
  9. Give one post-sales service.
  10. State one way social media helps customer service.
  11. What does Kaizen mean in practice?
  12. Which production method is best for a very high volume of one standard product?

Answers

  1. Job production.
  2. More frequent deliveries cost more, or bulk-buying discounts are lost (also: production stops if a delivery is late).
  3. Spare stock kept to meet unexpected demand or cover late delivery.
  4. 5.00 / 0.80 = 6.25 per usable unit.
  5. Quality and reliability.
  6. Total quality management.
  7. Any two from: percentage defective, return rate, number of complaints, repeat purchases, satisfaction scores.
  8. Independent owners run outlets under the brand, so a weak outlet may damage the brand and the franchisor has less direct control.
  9. Any one of: user training, help line, servicing.
  10. It gives fast two-way contact so queries can be answered and feedback gathered.
  11. Everyone looks for small, regular improvements.
  12. Flow production.

Where marks are usually lost

  • Defining a production method without linking it to the business in the stem.
  • Giving only the benefits of JIT and forgetting the delivery cost and lost economies of scale.
  • Picking a supplier on price alone.
  • Confusing buffer stock with JIT.
  • Writing that TQM is a final check, not a whole-business approach.
  • Listing customer service methods without a consequence such as loyalty or reputation.
  • Quoting figures without a unit or without a judgement at the end of an evaluation.
  • Ignoring the stem: naming outsourcing or franchising risks when the business uses neither.

Frequently asked questions

How do you calculate cost per usable unit when comparing suppliers? Cost per usable unit is the price divided by one minus the proportion that is unusable. A supplier with a lower price can work out more expensive once unusable items are allowed for.

What is the difference between flow and cell production? Flow production makes a standard product continuously along a line, which suits very large demand but needs costly equipment and is hard to change. Cell production splits production into small self-contained teams that each make a complete part or product, which suits medium volumes but needs trained, flexible staff.

What is the difference between job and batch production? Job production makes one item to a customer’s order, while batch production makes a group of identical items before switching to the next product.

How can ICT improve customer service? Websites can give information, FAQs, order tracking and live chat at any hour. Good service still has costs, such as training, staff time and systems.

Official syllabus

OxfordAQA International GCSE Business (9225) specification, version 3.1, OxfordAQA, for International GCSE exams May/June 2022 onwards. Section 3.3 Business operations (3.3.1 to 3.3.4).

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