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Quantitative Research Methods - Using Cross-Tabs


quantitative research qualitative cross tabluation cross tabs

Cross-tabs - Qualitative research in the palm of your hand.

Courtesy of Gullaume Riesen, photographer, for Stock.xchng. Copyright September, 2, 2009

Cross-tabs or cross tabulation is a quantitative research method appropriate for analyzing the relationship between two or more variables. Data about variables is recorded in a table or matrix. A sample is used to gather information about the variable. The most common type of data collected in cross tabulation is a count of the occurrences of the variables. This count or number is referred to as frequency. The matrix used to show the frequency of the occurrences of the variables being studied is called frequency distribution. A matrix is used to show and analyze frequencies for a particular group or designation.

Difficulty: Average
Time Required: Several Hours

Here's How:

  1. Cross Tabulation Provides Structure for Quantitative Data.

    Raw data is easier to manage and understand when it has structure. Tables permit data about variables to be organized. These tables are often called contingency tables. Contingency refers to the possibility that a relationship exits.

    Variables describe an attribute of a person, group, place, thing, or idea. Variables can be either categorical (qualitative) or quantitative. Categorical variables are descriptive, often indicating something about the group from which the data is derived. Examples of categorical variables are attribute labels or names.

  2. Study One Variable with Cross-Tabs

    Researchers refer to frequency tables by names that indicate number or arrangement of variables that are being studied. A univariate frequency table shows data about one variable. Often the data in a univariate table is put into groups that consist of a range of values or designations that have been given a value or rank. The ranks are then put into order. An example of univariate data would be the frequency at which students earn grade points and fall into the A, B, C or 4.0, 3.5, 3.0 categories for a college course.

  3. Study Multiple Variables with Cross-Tabs

    When a frequency table shows data for more than one variable, it is called joint or bivariate contingency table. Bivariate frequency tables often show data in a two-way arrangement. An example of bivariate data would be the frequency with which people from different regions (north, south, east, west) of the country select crunchy snack bars or chewy snack bars.

  4. A Little More About Variables

    Quantitative variables can fall into one of two types: Discrete or continuous. Discrete variables can only be an interger value -- that is, a number between zero and infinity. Continuous variables can be any one of the possible values between the permitted or agreed upon maximum and minimum values in a range of values. As a general rule, variable types -- discrete or continuous -- are not used together in the same frequency distribution.

  5. Cross-Tabs Permit Comparisons of Frequency Distributions

    Data from frequency distributions can also be shown in a visual way, as in a graph. Distributions are compared by looking at four features of the data: Center, spread, shape, and irregularities. Center refers to the point at which half of the data falls on either side of a central point. Spread refers to the variability of the data, with a wide spread indicating greater variability than a narrow spread. Shape refers to the symmetry, skewness, or peaks and valleys of the distribution. Irregularities refers to gaps or outliers in the data pattern.

  6. Cross Tabulation Software

    A number of software applications specialize in cross tabulation research. The Greenbook, the guide for buyers of market research services, lists 14 cross tablulation display software in their directory.

  7. Basic Quantitative Research Methods Brush-Up

    Need a quick refresher about the types and benefits of quantitative research? Check out this article Understanding Market Research, or this article which explains how market research differs from marketing research.

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