Chapter Four - Descrbing Quantative Data Flashcards
Nominal level
Measurement involves naming an attribute of the participants or their responses
Ordinal level
Measurement on a scale that allows data to be put in an order, but differences between the points on the scale are not the same
Interval level
Measurement on a scale where the differences, the intervals, between the points on the scale are the same
Mean
An average that is calculated by adding together all the items and then dividing the total by the number of items.
The mean is one way of describing an average score, there are other ways of calculating average scores.
Inferential statistics
Statistical texts that permit conclusions to be drawn from quantitive data generated by researcher
Range
A measure of dispersion representing the difference between the smallest and the largest score in a data set
Standard deviation
A descriptive statistic that represents the average amount by which individual values in the data differ (or deviate) from the mean.
Variance
A measure of dispersion which involves subtracting the mean from each score and squaring the result, and then arriving at an average of these values. By taking the squads root of the variance, the standard deviation can be calculated
Descriptive statistics
These are used to describe features of a data set; for example, the mean and the standard deviation
Evaluative conditioning
Liking or disliking something because it has been associated with something positive or negative