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Analysing statistical data · Part 2 of 3
9 exam-style questions with model answers, plus 15 quick multi-choice questions — every question on this part of the standard, grouped by the 3 pages of notes they come from.
Write a full answer before you reveal the model one. That comparison is where the learning happens.
State the six things every figure in your report must have, and explain why a line graph is usually the right choice for this standard.
Explain in detail how you would present two issues measured in different units — for example export receipts in $ billions and the exchange rate in US$ — on a single figure, and why doing so helps meet the standard's criteria.
A student's report contains a graph with a vertical axis running from 4.0% to 4.6%, showing New Zealand's unemployment rate over two years. The line appears to rise steeply. The student writes: "Unemployment has risen dramatically."
Discuss the presentation and the conclusion. Compare and contrast what this graph shows with what a properly scaled graph over a longer period would show, and explain what the student should do.
Explain the relationship between nominal GDP and real GDP in a country's data, using an economic concept.
Explain in detail the relationship between the Consumers Price Index and the Official Cash Rate in New Zealand data, using economic concepts and models.
Within the issue of international trade, a student's data shows New Zealand's export receipts rising over three years while export volumes fall.
Explain this relationship using economic concepts and models, compare and contrast the two possible explanations, and give a reasoned judgement about which is more likely and what it means for New Zealand.
Explain the inter-relationship between economic growth and unemployment data, using an economic concept.
Explain in detail the inter-relationship between the NZ$ exchange rate and New Zealand export receipts, including the direction of causation.
A student's data shows that New Zealand's economic growth and unemployment moved in opposite directions for eight years, but in one particular year both rose at the same time.
Explain the normal inter-relationship and the year in which it broke down. Compare and contrast the two situations, and give a reasoned judgement about what the exception reveals.