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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.continue
mathsStatistics and ProbabilityStatistics: Grouped Data

Predicting using Grouped Data : Probability

In this page, finding probability of grouped data is explained with some examples.



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grouping of data in tabular form Considering the data height of students in a class of `20` students.

Considering this to be representative data for students of that age group, We try to predict the height of a student.

The probability of a random student in the height range `95` to `100` `=5//20`

Considering the data height of students in a class of `20` students. probability of the continuous data Considering this to be representative data for students of that age group, the probability of a random student of that age group in each of the range is given in the table.

grouping of data in tabular formConsidering the data height of students in a class of `20` students.

Considering this to be representative data for students of that age group,
We try to predict the height of a student.

The probability of a random student to be exactly `97`cm high is 0. It is noted that the probability of getting one particular value is `0` in continuous distribution. This will be explained in detail in higher classes.

grouping of data in tabular form Consider the data height of students in a class of `20` students.

   `90.2`, `97.4`, `99.7`, `88.3`, `90.7`

   `93.5`, `96.8`, `89.5`, `99.5`, `98.9`

   `91.2`, `101.3`, `94.0`, `93.4`, `93.1`

   `94.7`, `96.9`, `92.8`, `91.8`, `99.6`

The figure shows the grouped data with ranges less than `90`, `90` to `95` range, `95` to `100` range, and greater than `100`.

It is noted that, This is one possible grouping and the data can be grouped in different ranges.

Considering the data height of students in a class of `20` students. probability of continuous data Probability of the same is given in the figure.

                            
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