Statiistical Evaluation Flashcards
descriptive statistics
the listing and summarizing off data in a practical, efficient way
statistics
the branch of mathematics concerned with summarizing and making meaningful inferences from collections of data
frequency distribution
an arrangement of data that indicates how often a particular score or observation occurs
normal curve
a graph of frequency distribution shaped like a symmetrical, bell-shaped curve; a graph of normally distributed data
central tendency
a number that describes something about the “average” score of a distribution
variance
a measure of difference, or spread of data
standard deviation
a measure of variability that describes an average distance of every score from the mean
correlation coefficient
describes the direction and strength of the relationship between two sets of variables
inferential statistics
numerical methods used to determine whether research data support a hypothesis or whether results were due to chance