-
Table
a display of data in a matrix format
-
graph
a representation of data by spatial relationships in a diagram
-
frequency distribution
a graph that shows the number of scores that fall into specific bins,or divisions of the variable
-
histogram
a frequency distribution in which the frequencies are represented by contiguous bars
-
frequency polygon
a frequency distribution in which the frequencies are connected by straight lines
-
normal curve
a bell shaped cure described by a certain mathemeatical function
-
skewed
a distribution that is not symmetrical
-
cumulative frequency distribution
a frequency distribution that shows the number of scores that fall at or below a certain score
-
scattergram
a graph showing the responses of a number of individuals on two variables; visual display of correlational data
-
median split
a division of the subjects in a study into two groups of equal size on the basis of one of the variables
-
line graph
a graphical representation using lines to show relationships between quantitative variables
-
bar graph
graphical representation of categorical data in which the heights of separated bars, or columns, show the relationships between variables
-
time-series graph
a graph in which the abscissa (x-axis) represents time
-
error bars
in a graph, vertical lines that indicate plus or minus one standard deviation of the data or, less frequently, the standard error of the mean
-
box-and-whisker plot
a typeof graph based on median and percentiles rather than mean and standard deviation
-
data reduction
the process of transcribing data from individual data sheets to a summary form
-
coding guide
a record that specifies the variables of a study, the columns they occupy in the data file, and their possible values
-
invalid data
data points that fall outside the defined range for that variable of data
-
missing data
empty cells in a data matrix
-
outliers
dat points that are highly improbable, although not impossible
-
missing data code
a symbol, such as an asterisk, that is entered ina cell that has no data
-
validity
an indication of accuracy in terms of the extent to which a research conclusion corresponds with reality
-
internal validity
extent to which a study probides evidence of a cause-effect relationship between the independent and dependent variables
|
|