  Drawing inference from data is an important skill for students to understand
their everyday life, so that the sampling distribution as a central topic in
statistical inference is necessary to be learned by the students. However,
little is known about how to teach the topic for high school students,
especially in Indonesian context. Therefore, the present study provides a
teaching experiment to support the students' informal inferential reasoning in
understanding the sampling distribution, as well as the students' perceptions
toward the teaching experiment. The subjects in the present study were three
11th-grader of one private school in Yogyakarta majoring in mathematics and
natural science. The method of data collection was direct observation of
sampling distribution learning process, interviews, and documentation. The
present study found that that informal inferential reasoning with problem-based
learning using contextual problems and real data could support the students to
understand the sampling distribution, and they also gave positive responses
about their learning experience.
