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Standard error – Standard deviation of the mean.

Statistic - The observations used to describe a sample. (Or quantity
computed from a sample).

Statistics - Concerned with the scientific methods of collecting, organizing,
summarizing presenting and analyzing a data, as well as drawing valid
conclusions and making reasonable decisions on the basis of such
analysis in narrower sense, it denotes the data themselves or numbers
from the data as, for example, average.

Statistical hypothesis - Statement with regards to a certain parameters in
which is still to be proven.

Survey - A procedure of gathering data from a sample.

Subscript - A number appended to a variable that indicates position.

Treatment - The effect being tested in an experiment. Any condition, material
or method which is controlled and applied to experimental subjects
(crops, animals, etc.) under required environmental conditions, the effect
of which is to be measured and compared with the
effect of other treatments.
Type 1 error - The error incurred when rejecting the null hypothesis, Ho while
it should be rejected (false).

Type 11 error - The error when the null hypothesis, Ho while it should be
accepted (true).
Upper class and lower class boundaries -The class interval 60-62 (masses
recorded in the nearest kilograms) theoretically includes all
measurements from 59.5000 to 62.5000kg. These numbers, indicated
briefly by the exact numbers 59.5 to 62.5, are called boundaries or true
class limits; the smaller numbers 59.5 is the lower class boundary and
the larger number 62.5 is the upper class boundary.
Upper limit - Is the largest limit corresponding to the largest value of the class
interval.
Variable -A symbol such as X, Y, Z, which can assume any of a prescribed set
of values, called the domain.
Variability – The existing variations or differences among means.
Variance - The arithmetic mean of the squared deviations from the mean.
Y = f (X) - Interpreted as the variable Y is a function of the variable X. Y is
called the dependent variable while X is called the independent.