18 terms

Average

The result of evening out a set of numbers.

To find the average, divide the sum of the terms by the number of terms.

To find the average, divide the sum of the terms by the number of terms.

Census

A survey of a whole population.

Data

The pieces of information or scores to be examined.

Dot Plot

A type of graph that uses one axis and a number of dots above the axis.

Frequency

The number of times an outcome occurs in the data.

Frequency distribution table

A table that shows all the possible outcomes and their frequencies.

Frequency Histogram

A type of column graph showing outcomes and their frequencies.

Frequency Polygon

A type of line graph showing outcomes and their frequencies.

Mean

The mean is the arithmetic average.

Median

When data is put in order, the median is the middle score (for an odd number of scores) or the mean of the middle two scores (for an even number of scores).

Mode

The outcome that occurs most often.

Outcome

A possible value of the data.

Outlier

A data value that is separated from the main body of data.

Range

The difference between the highest and lowest data values.

Sample

A part (Usually a small part) of a large population.

Statistics

The collection, organisation and interpretation of data.

Stem-and-leaf plot

A type of graph that shows the spread of data without losing the identity of each value.

Variable

Something that can be observed, measured or counted to provide data.