The probability of the occurrence of two events.

It is the square of the standard deviations.

The total frequency of all values less than or equal to the upper class boundary of a given class - interval and vice-versa.

The numerical information collected of variables.

The number of classes to which the value can be assigned arbitrarily or at will without violating the restrictions and limitations placed on the numbers of independent constraints in a set of data.

Events whose occurrence or non-occurence doesn't affect the occurrence of the other event.

variable which is cause or influence by another variable in a given phenomenon.

The numerical data which describes phenomena.

A test, used to compare two statistical values and predict that one is higher than the other or vice-versa.

A variable not capable of assuming all values in a given range or a variable which can be measured only by means of whole numbers.

Two outcomes which doesn't happen simultaneously or which have nothing in common.

Collection of measurements expressing how scores tend to spread over a measurement scale

The scatter or variability of the data about a given Central tendency.

A diagram which displays the number of measures falling into different Histogram classes.

It is a graphic display in which frequencies are plotted against mid-points of the class-intervals & the points thus obtained, are join by a line segment.

The confidence limits are also known as Fiducial limits [See Confidence intervals]

The trials, which entail the happening of an event, are favorable to the event.