Statistics 1 Marks Each

A table showing ‘less than’ cumulative frequency corresponding to the various values of discrete data is called ‘less than’ type cumulative frequency distribution for discrete data.

in a frequency distribution the sum of frequency upto the value of an observation or a class is called the cumulative frequency of that value of the observation or that class. It is denoted by symbol ‘cf’.

When the range of raw or ungrouped data is very large, one should form a frequency distribution with unequal class length.

A numeric value showing the repetition of value of observation is called frequency of that observation. It is denoted by symbol ‘f'.

A process of arranging ungrouped or raw data in systematic and short form is called classification.

The main objective of percentage divided bar diagram is to compare effectively the mutually related sub-data.

If a variable can assume any value within the specified range is called continuous variable.

When the data about different places, things or times consist of several mutually related sub-data on different components are given, divided bar diagram is drawn.

When the data about different places, things or times are given on more than one mutually related characteristics, multiple bar diagram is drawn.

in statistical study, the main objective of a diagram is to represent the huge and complex data into simple, attractive and concise form.

The main disadvantage of classification of data is that the basic form of the individual unit of the data is changed.

The characteristic of the best table to represent qualitative data is ‘the table satisfies the objective of classification’.

A classification of raw data on the basis of more than one attribute is called manifold classification.

Tabulation is a process of arranging the qualitative data in systematic manner into rows and columns.

A table showing ‘more than’ cumulative frequency corresponding to the lower boundary point of various classes is called ‘more than’ type cumulative frequency distribution for continuous data.

If a variable can assume definite or countable values within the specified range is called discrete variable.

In pictogram there is no any barrier of language.

Pictogram is the best tool to explain the data to illiterates.

A diagram in which data are represented by pictures is called pictogram.

Pie diagram is a two-dimensional diagram.

The another name of pie diagram Is Area diagram.

To draw a circle diagram first of all the square root of the given value of the data is found, then radius of the circle is determined by dividing or multiplying the square root of the value by a constant.

When the volumes of data of two or re places, things or times are numerically large n circle diagram is drawn.

In bar diagram the height of each bar taken proportional to the given data.

In bar diagram the unit of length is taken as a measure.

Bar diagram is an one dimensional diagram.

The bar diagram is drawn to compare the data of different places, things or times.

When the range of values of a discrete variable is large, then inclusive type of continuous frequency distribution is prepared.

In ‘less than’ type of cumulative frequency distribution the upper boundary points of classes are taken into account.

In ‘less type’ of cumulative frequency distribution the order of cumulative frequency is descending.

In ‘more than’ type frequency distribution cumulative in descending order. Of cumulative frequencies are in descending order .

A number showing how frequently a observation occurs is called frequency of that observation, while the sum of frequencies up to that observation is called cumulative frequency of that observation.

The definite limits of value of a variable is called a class.