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18 Cards in this Set
- Front
- Back
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Instruments
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Devices or techniques used to collect data
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Bias
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Any influence that can change the results of a study
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Variable
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A characteristic, attribute, or outcome
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Dependent variable
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The outcome variable of interest
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Independent variable
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The conditions or factors that are explored in relationship to their influence on the dependant variable
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Confounding variable
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A variable that might affect the dependent variable, also termed extraneous variable
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Dichotomous variable
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A variable with only 2 categories
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Indirect(inverse) relationship
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A negative correlation between 2 variables
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Casual relationship
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A relationship between two variables in which the presence or absence of one variable determines the presence or absence of the other
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Analysis
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The process of testing the data to answer the research question
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Mean
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The average value or measure of central tendency. The mean is obtained by dividing the sum of values by the total number of values.
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Median
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The middle score
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Mode
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The value that occurs most frequently.
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Range
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Represents the dispersion of data or the difference between the smallest and largest values
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Standard deviation
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A measure of variability of data. The standard deviation is the average of the deviations from the mean.
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Histogram
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A graphic display of data frequency using rectangular bars with heights equal to the frequency count.
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Frequency distribution
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A display of data values from the lowest to the highest, along with a count of the number of times each value occurred.
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Variability
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The degree to which values are widely different or dispersed.
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