A measure that is used to report test data. Tells what percent of the total data values are below a given value.
Percent of increase
The ratio of an amount of increase to the previous amount, expressed as a percent.
Median
The middle number in a set of data when the data are arranged in numerical order. If the data set has an even number, find the mean of the two data points.
Quartiles
The values that divide a set of data into four equal parts.
Mean
The sum of the numbers in a set of data divided by the number of items in the data set.
Percent of change
The ratio of the change in an amount to the original amount expressed as a percent.
Deciles
Divides data into ten equal sections.
Mode
The number(s) that appear most often in a set of data.
Percent of decrease
The ratio of an amount of decrease to the previous amou
nt, expressed as a percent.
Percentile
A measure that is used to report test data. Tells what percent of the total data values are below a given value.
