Comprensión del valor esperado y variabilidad de la proporción muestral por estudiantes de educación secundaria obligatoria

  1. Begué, Nuria 1
  2. Batanero, Carmen 1
  3. Gea, María 1
  1. 1 Universidad de Granada
    info

    Universidad de Granada

    Granada, España

    ROR https://ror.org/04njjy449

Journal:
Enseñanza de las ciencias: revista de investigación y experiencias didácticas

ISSN: 0212-4521,  2174-6486

Year of publication: 2018

Volume: 36

Issue: 2

Pages: 63-79

Type: Article

DOI: 10.5565/REV/ENSCIENCIAS.2256 DIALNET GOOGLE SCHOLAR lock_openOpen access editor

More publications in: Enseñanza de las ciencias: revista de investigación y experiencias didácticas

Abstract

We analyse secondary school students’ intuitive understanding of the relationships between the population proportion and the expected value of a sample proportion, as well as its variability in relation to the sample size. We propose to 302 students four items in each of which four probable values for the number of outcomes for a given event are requested and in which the proportion population and sample size are varied. The statistical analysis of the values provided by the students suggests a good understanding of the relationships between the population and sample proportions. The variability of the sample proportion is overestimated in big samples and depends on the problem context in small samples. We also observed the equiprobability, positive and negative recency biases.

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Funding information

Proyecto EDU2016-74848-P (AEI, FEDER) y Grupo FQM126 (Junta de Andalucía).

Funders

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