Directed acyclic graphs (DAGs) are now a popular tool to inform causal inferences. We discuss how DAGs can also be used to encode theoretical assumptions about nonprobability samples and survey nonresponse and to determine whether population quantities including conditional distributions and regressions can be identified. We describe sources of…

Data literacy is complex. When students investigate the natural world, they must be able to gather data, organize it in tables and spreadsheets, analyze it in context, and describe and interpret it--usually as evidence to support a scientific argument. These skills are echoed in the science and engineering practices of the "Next Generation…

The article illustrates how statistical content and pedagogical reasoning were taught in tandem in an undergraduate course. A typical day in the course is described. It is also suggested that practising teachers can benefit from strategies used in the course. (Contains 1 table and 3 figures.)

Teaching students to collect data to answer questions is an important life skill that will serve them well throughout their adult lives. The purpose of this manuscript is to describe the implementation of an action research project in a fifth grade resource classroom. Students with mild disabilities were taught how to conduct surveys using three…

Presents activities using the theme of collecting and interpreting data from the students' own classroom. Stresses communication among students and between students and the teacher. Includes reproducible student worksheets. (MKR)

This article compares marriage patterns by race, education and religion in the United States during the 20th century, using a variety of data sources. The comparative approach allows several general conclusions. First, racial endogamy has declined sharply over the 20th century, but race is still the most powerful division in the marriage market.…

Suggests a classroom activity for teaching psychology students about group norms. Calls upon students to conduct peer surveys about a particular behavior and then to represent approval or disapproval of the behavior graphically. Argues that the activity increases student understanding of survey research methods, the need for controlled research,…

This survey of 510 special education teachers found that most teachers collect, record, and use data on student performance to determine instructional effectiveness, appropriate time to move students to the next skill, and which objectives have been met. Only one-third of teachers used graphs for displaying and interpreting data. (Author/JDD)

The purpose of the California State Library-sponsored project, InFoPeople, is to enhance access to information resources by providing points of public access to the Internet in public libraries throughout the state of California. This Stage 1 report represents an initial set of findings and issues related to the InFoPeople project and provides the…

This evaluation of Cincinnati's Title I projects for the disadvantaged public school students notes that definitive statements about measurable results are unrealistic because the projects were evaluated after only 5 months in operation. However the evaluation establishes baseline data. Information about the 13 Title I projects was gathered from…

The concerns about the use of a modified scree test in analyzing data from Delphi surveys may not be important if the scree test data are weighted. Factors important to the study can be incorporated into the test, and the ordinate on the graph can be labeled accordingly. (SLD)

The report tabulates and analyzes responses to two questionnaires returned by 531 (out of 1672) profit and non-profit publishers of 974 (out of 2552) United States scholarly and research journals. Certain categories of periodicals were excluded because they were not believed to ordinarily contain communications useful for scholarly purposes, or…

Three problems affecting the use of a modified scree test in analyzing Delphi survey data are discussed: (1) the adequacy of the criterion; (2) the complexity of decision making; and (3) the nature of the Delphi panel. Using the modified scree test with these considerations in mind is suggested. (SLD)

This case study covers several exploratory data analysis ideas, the histogram and boxplot, kernel density estimates, the recently introduced bagplot--a two-dimensional extension of the boxplot--as well as the violin plot, which combines a boxplot with a density shape plot. We apply these ideas and demonstrate how to interpret the output from these…

Provides 5 activities for levels K-2, 3-4, 5-6, 7-8, and for the family that incorporate data collection and interpretation in the decision-making process. Activities investigate taste preference, voter preference, meal preference at the school open house, three close presidential elections, and questions about the years and dates of presidential…