ESALQ-USP Graduate Programme in Statistics and Agronomic Experimentation (PPGEEA)

Brazil · University of Sao Paulo, Luiz de Queiroz College of Agriculture · pg

13practice questions written to this syllabus
1subjects

Format

Selection process with examinations and oral assessment ('exames e arguicoes'), affirmative-action places and English proficiency.

Sections

Over the years

Read on the programme page: founded at ESALQ over 50 years ago, CAPES grade 5, aim 'to improve the research aspects of experimental agriculture'. Exam syllabus not read.

Official source: https://www.esalq.usp.br/pg/programas/estatistica

Subjects this exam draws on

Statistical Ecology, Environmental & Fisheries Statistics13 questions

Five practice questions, worked

Original questions written to this exam's published syllabus and pattern. Not past papers.

1. Quadrat counts with variance much greater than the mean indicate a pattern that is:

  1. Random
  2. Clumped
  3. Regular
  4. Uniform by design
Answer and working

B. Clumped

Poisson (random) has variance = mean; regular patterns have variance < mean.

Statistical Ecology, Environmental & Fisheries Statistics · Spatial patterns: random, clumped and regular; dispersion indices

2. In the logistic model dN/dt = rN(1 − N/K), population growth is fastest at:

  1. N = K
  2. N = K/2
  3. N = 0
  4. N = 2K
Answer and working

B. N = K/2

rN(1 − N/K) is maximised at K/2.

Statistical Ecology, Environmental & Fisheries Statistics · Population dynamics models: logistic and Leslie matrix

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