Page 221 - Mathematics GRADE 9, DE-STREAMED (MTH1W)

sample
A subset of a population. See also population, subset.
scatter plot
A graph designed to show a relationship between corresponding numbers from two sets of data measurements associated with a single object or event; for example, a graph of data about students’ marks and the corresponding amounts of study time. Drawing a scatter plot involves plotting ordered pairs on a coordinate grid.
scientific notation
A way of expressing a very large or very small number in terms of a decimal number between 1 and 10 multiplied by a power of 10. For example, 690 890 000 000 is 6.9089 × 1011 in scientific notation, and 0.000279 is 2.79 × 10−4. See also power.
set
A collection of elements that fulfil specific criteria.
shrinking pattern
A pattern that involves a decrease from term to term. A shrinking pattern such as −3, −7, −11, −15 is linear since there is a constant decrease of 4 from term to term. This type of shrinking pattern is also known as a decreasing pattern. A shrinking pattern such as 40, 20, 10, 5, 2.5 is an example of a shrinking pattern that is non-linear, since the decrease from term to term is not constant. See also growing pattern.
simplify
To create an equivalent fraction by dividing the numerator and denominator by their greatest common factor, or by performing operations to create fewer terms in an algebraic expression.
slope
A measure of the steepness of a line, calculated as the rate of the rise (vertical change between two points) to the run (horizontal change between the same two points).
source
A place where data is obtained. Types of sources include original (primary) sources, such as observations, conversations, and measurements, and secondary sources, such as magazines, newspapers, government documents, and databases.
statistically analyse
To analyse a data set according to its measures of central tendency or its dispersion. See also dispersion, measures of central tendency.
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