Statistical methods in geography — KCSE Geography

KCSE Geography · 40 practice questions · 4 syllabus objectives

14 easy14 medium12 hard

What You'll Learn

Key learning outcomes for this topic, aligned to the KNEC KCSE syllabus.

Construct and interpret statistical diagrams: bar graphs, line graphs, pie charts, divided bar graphs and pictograms

Calculate and interpret measures of central tendency (mean, median, mode) from geographical data

Construct and interpret population pyramids, scatter diagrams and choropleth maps; identify patterns and trends in data

Statistical methods in geography

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easySHORT ANSWER4 marks

Identify two key features of a population pyramid and explain how each feature can indicate the demographic trends of a country. (4 marks)

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Part (a) — 2 marks

Age distribution showing the proportion of different age groups (1 mk)

Gender ratio indicating the number of males compared to females (1 mk)

Part (b) — 2 marks

Age distribution indicates whether the population is youthful or aging, affecting workforce and dependency ratios (1 mk)

Gender ratio can reveal demographic imbalances and potential social issues related to gender (1 mk)

easySHORT ANSWER4 marks

Name two situations in which the median is preferred over the mean in geographical studies and explain why. (4 marks)

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Part (a) — 4 marks

In income distribution studies: the median is less affected by extreme values (1 mk)

In land ownership size analysis: the median provides a better representation of typical land size (1 mk)

In population density studies: the median shows the central tendency without skew from outliers (1 mk)

In age distribution studies: the median effectively reflects the central age in skewed distributions (1 mk)

easySHORT ANSWER3 marks

List three measures of central tendency used in geographical data analysis and provide one application for each. (3 marks)

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Part (a) — 3 marks

Mean: used to calculate the average rainfall in a region over a period (1 mk)

Median: used to find the central income value in a population study (1 mk)

Mode: used to determine the most frequently occurring land use type in an area (1 mk)

State three reasons why it is important to use statistical diagrams in geographical studies. (3 marks)