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Thought-Process to Discover Knowledge

Welcome to nubtrek.

Books and other education websites provide "matter-of-fact" knowledge. Instead, nubtrek provides a thought-process to discover knowledge.

In each of the topic, the outline of the thought-process, for that topic, is provided for learners and educators.

Read in the blogs more about the unique learning experience at nubtrek.
mathsStatistics and ProbabilityStatistics : Fundamentals of Data

### Tally and Table Representation of Data

With examples, the tally and table representations are introduced.

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In a plate, oranges, apples, bananas, and mangoes were available. A group of students took one fruit each as given in the data.

The data is given as

2 students took oranges
2 students took apples
5 students took mangoes
1 student took banana

Continuing on, the next student takes an orange, and then the following student takes a mango.

To update the information, the 2 oranges is changed to 3; and 5 mangoes is changed to 6.

To continue on an on-going data collection, the "tally" representation helps. The data is given as

2 students took oranges
2 students took apples
5 students took mangoes
1 student took banana

This is given in tally representation in the figure. Note the number of vertical lines given in each row. The data value 2 is represented with 2 vertical lines. A collection of 5 is represented with a diagonal line on four vertical lines.

Continuing on, the next student takes an orange, and then the following student takes a mango. The tally representation is updated easily. The data is given as

3 students took oranges
2 students took apples
6 students took mangoes
1 student took banana

This is given in tally representation in the figure.

The word "tally" means: current amount; ongoing count.

familiarize with the terminology
tally

Consider the tally representation of data given in the figure.

It is not straight forward to find the number of students who took mangoes. Some counting and adding has to be done to find the answer.

Tally representation is suitable to record an on-going data collection. Once the data collection is completed, the same can be given in the tabular form. The data given in tally is equivalently given in a "table". This representation is also called "tabulation of data".

The word "table" means: a flat rectangular surface. The surface can be vertical with inscriptions.

familiarize with the terminology
a table

Presenting Data with Tally Marks : Vertical bars (that are grouped into 5) is used to collect data.

Presenting Data in a Table : The data is given in a tabular form.

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