{"content":[{"text":"sample. Therefore, the results obtained, that will be discussed below, can not be generalized to all \n students but for students of the classroom in which the experiment was conducted. Though this is the \n basis for future research involving various aspects of statistics. \n 23 students participated in this research, all belonging to the 6th year aged 11 to 13 years of \n elementary education at a school of Pernambuco state public located in the metropolitan area of \n Recife. \n It is important to emphasize that students participated in the survey not suffer intervention \n before the experiment.","bbox":{"left":0.11917,"top":0.122886,"width":0.762143,"height":0.12266300000000002}},{"text":"Procedure","bbox":{"left":0.11917,"top":0.258532,"width":0.08218999999999999,"height":0.01815899999999998}},{"text":"At first we tried to find in the literature a way to build an assessment tool to collect data that \n takes into account some of the main concepts and basics of statistics such as sample, variables, \n characterization of sample, size and comparison data. \n The students were assessed using a questionnaire built on a contextualized activity called \n \"studying seeds.\" The questionnaire consists of six (6) questions of which four (4) of them were \n opened, and two (2) closed with 1 (one) of them with only a statement with two (2) alternatives and \n the other with four (4) statements each with two alternatives. Every issue with purpose of addressing \n different knowledge in the field of statistics. \n The activity proceeds as follows: \n 1 - the questionnaire was applied. \n 2 - Realized activity. \n 3 - The questionnaire was applied again with the intention of comparing if differences in the \n responses. \n The activity performed (studying seeds) was carried as follows: \n First was told that the learners were divided into groups of at least 4 (four) and a maximum of six (6) \n students. After the delivered has been a notebook with four (4) sheets, each sheet having a portion of \n the activity; a crayon box; a ruler; a disposable cup of coffee and a bag containing a small amount of \n five (5) different types of seeds. Soon after was presented the kinds of seeds also asking them to \n characterize, or more specifically were asked to say the color of the seeds, the species and the type of \n skin (smooth or rough). They were then instructed to move the bag's contents (shake the bag) to mix \n the seeds in order to mix the seed population (in the case of the experiment the population of each \n group was the bag of seeds), then were instructed that with the cup they withdraw part of the seed in \n with the aim to introduce them the concept of the sample. After sampling, they began the Notebook \n activity that was delivered. The 1st (first) sheet contained a framework where with crayons students \n would fill the color of the seed, the 2nd (second) sheet contained another frame where with the \n crayons they mark the kind of seed that had in their sample, the 3rd (third) sheet contained a \n framework where with the crayons they mark the type of skin that had the seeds of its sample. At the \n end of three (3) leaves had a small table summarizing the results obtained in the form of a frequency \n distribution, the 4th (fourth) and last leaf contained a picture with instructions for students with a ruler \n should measure all seed sample, recording the results in the table. \n To analyze questionnaires before and after the activity, it was used the following scale: value \n 1 (one) for not responding / do not know, value two (2) to respond incorrectly, value three (3) to \n respond in part correct value 4 (four) answered correctly. Then calculates the difference between the \n responses before and after the activity. \n To analyze the results we used the appropriate hypothesis test for paired data, the Wilcoxon \n test. This has the hypotheses: \n 𝐻0 : There is no effect in the treatment. \n 𝐻1 : The treatment had effect. \n To reject the null hypothesis we used the test value (p-value) of 5%. It also has built a \n confidence interval for the value of the differences.","bbox":{"left":0.11917,"top":0.288234,"width":0.762235,"height":0.609279}}],"images_bbox":[{"left":0.119331,"top":0.042753,"width":0.124975,"height":0.06812},{"left":0.774441,"top":0.043181,"width":0.106632,"height":0.066838}],"images_bbox_not_text_overlap":[{"left":0.119331,"top":0.042753,"width":0.124975,"height":0.06812},{"left":0.774441,"top":0.043181,"width":0.106632,"height":0.066838}]}