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# What are the components of a statistical table?

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A statistical table contains several components designed to illustrate the data, including a title for the table, the table number, the heading and subheadings, the table body, the table spanner, dividers and table notes. Tables are used to display data obtained from an experiment and are often included in lab reports or research papers and presentations.

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The title of the table provides a description of the contents. It may include the groups, their classifications and the variables. The title should never be more than one or two lines. Table numbers are needed to refer to a specific set of values being discussed. This is especially useful if there are multiple tables.

Headings and subheadings identify and establish the order of the data. Column headings and column spanners are included in headings and subheadings. The table body is where the bulk or meat of the data is located. This includes any means, percentages, frequencies or other values found that are significant. Table spanners divide data in a table without the addition of another column. Dividers are horizontal lines that separate different parts of the table. Finally, table notes explain any information that is included in the table, including definitions and abbreviations.

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Statistical significance shows the mathematical probability that a relationship between two or more variables exists, while practical significance refers to relationships between variables with real-world applications, according to California State University, Long Beach. Two or more variables do not need statistical significance to have practical significance, and vice versa.

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A good statistical sample size is at least 100, and preferably more, participants. With a 100-participant sample size, the researcher has a margin of error of approximately 10 percent with a 95 percent confidence rating in the results. For the researcher to increase his confidence rating and reduce his margin of error he has to increase the size of the sample.

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To find the IQR, find the median or center of the data, calculate the median of the lower and upper halves of the data, and find the difference between the medians of the lower and upper halves of data. You need a data set, a calculator, and pencil and paper to complete this task.