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### 67 Cards in this Set

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 Descriptive Analysis The elementary transformation of raw data in a way that describes the basic characteristics such as central tendency, distribution and variability Histogram A graphical way of showing a frequency distribution in which the height of a bar corresponds to the observed frequency of the category Tabulation The orderly arrangement of data in a table or other summary format showing the number of response to each response category; tallying Frequency Table A table showing the different ways respondents answered a question Cross-Tabulation The appropriate technique for addressing research questions involving relationships among multiple less-than interval variables; results in a combined frequency table displaying one variable in rows and another in columns Contingency Table A data matrix that displays the frequency of some combination of possible responses to multiple variables; cross-tabulation results Marginals Row and column totals in a contingency table, which are shown in its margins Statistical Base The number of respondents or observations (in a row or column) used as a basis for computing percentages Elaboration Analysis An analysis of the basic cross-tabulation for each level of a variable not previously considered, such as subgroups of the sample Moderator Variable A third variable that changes the nature of a relationship between the original independent and dependent variables Quadrant Analysis An extension of cross-tabulation in which responses to two rating-scale questions are plotted in four quadrants of two-dimensional table Importance-Performance Analysis Another name for quadrant analysis Data Transformation Process of changing the data from their original form to a format suitable for performing a data analysis addressing research objectives Median Split Dividing a data set into two categories by replacing respondents below the median in one category and respondents about the median in another Index Numbers Scores or observations re-calibrated to indicate how they relate to a base number Box and Whisker Plots Graphic representations of central tendencies, percentiles, variabilities, and the shapes of frequency distributions Interquartile Range A measure of variability Outlier A value that lies outside the normal range of data Interpretation The process of drawing inferences from the analysis results Descriptive Analysis Transforming and summarizing raw data in to a form that makes it easy to grasp, understand and interpret The most common forms of summary are - Calculating measures of central tendency such as averages and medians, constructing frequency distributions and percentage or probability distributions, and graphically depicting data in the form of charts - pie, bar, line, etc Scale Any series of indicators arranged progressively according to value or magnitude used to categorize or quantify objects of events Nominal Scale numbers, letters or labels assigned to objects for identification or classification Ordinal Scale A scale that rank orders objects or events according to magnitude Interval Scale A scale in which the units have equal magnitude but which lack a true zero Ratio Scales A scale having units of equal magnitude and a true zero Type of Descriptive Analysis for Nominal Scale Frequency table, proportion, mode Type of Descriptive Analysis for Ordinal Scale Rank order, median, percentile Type of Descriptive Analysis for Interval Scales Arithmetic mean Type of Descriptive Analysis for Ratio Scales Index number, geometric mean, harmonic mean Geometric Mean n-th root of the product of n numbers Harmonic Mean A number h such that, if a