Question

define frequency, frequency distribution, cumulative frequency distribution, true upper and lower limits, class size of class interval,class mark of class interval, range

Answer 1

Frequency is defined as number of times a particular number is occurs.

Frequency distribution-
A Frequency distribution is an orderly arrangement of data classified according to the magnitude of the observations. When the data are grouped into classes of appropriate size indicating the number of observations in each class we get a frequency distribution. Frequency distribution is also known as Frequency table.

Cumulative frequency-
Cumulative frequency can be defined as the sum of all previous frequencies up to the current point.

True upper and lower limit-
True upper and lower limit of a class interval is the highest and the lowest value in a class interval.

Class size-
Class size is the difference between the upper limit and the lower limit.

Class Interval -
Class Interval is the observations of a data are condensed into groups, each group does obtained is called a Class Interval.

Class mark-
Class mark is the number in the middle of the class. It is found by adding the upper and lower limits and dividing by two.

Range-
A Range represents an interval—a set of values with a beginning and an end