In Kazakhstan, the statistics curriculum is a component of the mathematics curriculum at the high school level. The way statistics is taught  will be evolved as a result of changes in secondary school mathematics instruction. The probability theory is not given effectively in the mathematics curriculum in schools. Most students have little problem with the basic concepts, but many have a lot of trouble understanding how to organize increasingly complicated issues. The article discusses the current state of teaching statistics elements and the meaning of the curriculum plan. Our study's primary objective is to define the main benefits of each program by comparing various programs taught throughout in the country. In this article, the authors analyze algebra textbooks in grades 9-11. As a result of the analysis of the topics, the main features of the three programs involved in the study were identified, the results of which we will apply in the future to the systematization of the topics of secondary statistics. Systematization of Statistics topics helps to supplement the tasks and theoretical knowledge found in the textbook in accordance with the class level.