RESUMO Neste artigo, examinamos as atitudes em relação à estatística descritiva e seu ensino em uma amostra de 126 futuros professores de matemática da Espanha e do Chile. Seguindo uma metodologia quantitativa, nos aprofundamos na análise da direção (positiva ou negativa) das atitudes declaradas pelos participantes. Dentre os resultados, começamos por nos referir à validade do instrumento utilizado, para depois explorarmos a disposição dos sujeitos para os diferentes componentes de atitudes considerados, terminando com as principais diferenças de acordo com o país de origem. Concluímos que os participantes declaram uma atitude positiva em relação à estatística descritiva e seu ensino, a que mais positiva ao enfrentar ações didáticas em nos participantes chilenos.

ABSTRACT In this paper, we examine the attitudes towards descriptive statistics and its teaching in a sample of 126 prospective mathematics teachers from Spain and Chile. Following a quantitative methodology, we delved into analyzing the attitudes’ sense declared by the participants (negative or positive). Among the results, we begin by referring to the validity of the scale and next we explored the disposition of the sample towards the different attitudes’ components, ending with the main differences according to the country of participants. We concluded that the participants declare positive attitudes towards Descriptive Statistics and its teaching, which are more positive towards didactic action in Chilean subjects.

RESUMEN En este trabajo, examinamos las actitudes hacia la estadística descriptiva y su enseñanza en una muestra de 126 futuros profesores de matemática españoles y chilenos. Siguiendo una metodología cuantitativa, profundizamos en analizar el sentido (positivo o negativo) de las actitudes declaradas por los participantes. Entre los resultados, comenzamos refiriéndonos a la validez del instrumento utilizado, para luego explorar la disposición de los sujetos hacia los distintos componentes de actitudes considerados, finalizando con las principales diferencias según el país de procedencia. Se concluye que los participantes declaran actitudes positivas hacia la estadística descriptiva y su enseñanza, las que son más positivas frente a la acción didáctica en los sujetos chilenos.

RÉSUMÉ Dans cet article, nous examinons les attitudes envers la statistique descriptive et son enseignement dans un échantillon de 126 futurs professeurs de mathématiques Espagnols et Chiliens. Suivant une méthodologie quantitative, nous avons analysé la direction (positive ou négative) des attitudes déclarées par les participants. Parmi les résultats, nous commençons par nous référer à la validité de l’instrument utilisé, pour ensuite explorer la disposition de l’échantillon vers les différentes composantes des attitudes considérées, en terminant par les principales différences selon le pays d’origine. Il est conclu que les participants manifestent une attitude positive à l’égard des Statistiques Descriptives et de son enseignement, qui sont plus positives à l’égard de l’action didactique chez les participants chiliens.

Background: Several studies suggest that leptin modulates the reproductive axis function. Leptin may stimulate release of GnRH from hypothalamus and of gonadotrophins from the pituitary. A synchronicity of LH and leptin pulses has been described in healthy women and in patients with polycystic ovarian syndrome (PCOS), suggesting a relationship between the episodic secretion of LH and leptin. In vitro experimental studies have demonstrated that leptin administration promotes GnRH-LH release. However it is not established whether GnRH promotes the episodic secretion of leptin. Aim: To assess the response of LH and leptin to the administration of a GnRH bolus in hyperandrogenic and healthy women. Patients and methods: Eleven hyperandrogenic and eleven healthy women of similar age and body mass index (BMI) were studied. Under basal conditions three blood samples were collected every 30 min before and after the administration of a GnRH bolus (100 µg). LH and leptin concentrations were measured in all samples. Testosterone, SHBG and estradiol were determined in the first sample. For data analysis, the increment of LH and leptin between 0-30 and 0-60 min. was calculated. The LH and leptin areas under the curve (AUC) before and after GnRH administration were also calculated in both groups. Results: After GnRH administration. an increment in LH concentrations was observed in both groups; however, leptin concentrations were not modified. In both groups LH area under the curve increased after GnRH administration; however, the leptin area was not modified. Conclusions: These results suggest that circulating leptin concentration is not modulated by GnRH-LH. (Rev Méd Chile 2000; 128: 460-6)