8th Math NCERT Chapter 13
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Here are the important topics from the chapter on "Introduction to Graphs" along with brief summaries:
1. Line Graphs:
– Line graphs display data that changes continuously over periods of time. They are useful for showing trends and patterns in data7.
2. Interpreting Graphs:
– Graphs can provide information about various scenarios, such as performance comparisons between individuals or the progress of a journey from one point to another7.
3. Data Analysis:
– Graphs help in analyzing data visually, making it easier to understand and interpret trends and relationships within the data7.
4. Graphical Representation:
– Graphs are visual representations of collected data and are used to present information clearly and concisely, aiding in better comprehension compared to tables7.
In a line graph, what does the horizontal line represent and what is usually labelled on the vertical line?
Explain how a line graph can show trends or comparisons using an example.
From the given example of batsmen A and B's performance graph, explain which batsman appears more consistent and why.
Using the example of a car's journey graph, explain how one can determine if the car stopped at any point during the journey.
For the temperature graph of a patient in a hospital, answer the following questions: (a) What was the temperature at 1 p.m.? (b) When did the temperature reach 38.5°C? (c) When did the patient's temperature show the same value twice?
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