Mode Of Grouped Data
Chapter Name : Statistics |
Sub Topic Code : 104_10_14_03_01 |
Topic Name : Mode Of Grouped Data |
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Sub Topic Name : Mode Of Grouped Data |
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Introduction
• In grouped data, data is in groups or classes. • Mode of data is the data repeated maximum number of times. • In this section, we find mode of grouped data.
Pre-Requisites:
• Knowledge of Ungrouped data and grouped data. • Knowledge of frequency, mean, median, mode of ungrouped data.
Activity:
You can find mode of ungrouped data by observing frequency of data but mode of ungrouped data cannot be found out by observing frequencies. We need to apply formula for finding mode of ungrouped data.
Real Life Question:
Domino’s pizza conducted a survey for their franchisee to find how many number of hours were required to make maximum number of pizzas. Find the modal hour?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Grouped Data | Data is grouped or in classes. |
| Frequency | Number of items falling into any class. |
| Mode | Data repeated maximum number of times. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Paper, Pen | Prepare Grouped and Ungrouped data. Find mode of data. |
Real life uses :
Mode of grouped data is often used in statistics and we use statistics in polls, for ratings of a particular product, tests etc.
Practical examples around us
| Examples | Explainations |
|---|---|
| Survey companies. | A table shows grouped data of monthly income of different families in a locality. Find the income earned by most number of families. Here we need to find mode of grouped data. |
What you learn in Theory:
Mode of grouped data cannot be found by just observing frequency of data we need to find modal class, a class with maximum frequency. The mode is a value inside the modal class.
What you learn in Practice:
Mode of data can be applied to many real life situations like an ice cream parlor sells twice as many vanilla cones as butter-scotch cones will need to produce more vanilla cones to satisfy its customers. Here number of vanilla cones sold is mode.