M3 - Graphical representations

Question 1

Line Graphs

Answer 1

Linear graphs are used to display the continuous data and it is useful for predicting the future events over time

Question 2

Bar Graphs

Answer 2

Bar Graphs are used to display the category of data and it compares the data using solid bars to represent the quantities.

Question 3

Histograms

Answer 3

The graph that uses bars to represent the frequency of numerical data that are organised into intervals. Since all the intervals are equal and continuous, all the bars have the same width.

Question 4

Line Plot or scatter graphs

Answer 4

It shows the frequency of data on a given number line. ‘ x ‘ is placed above a number line each time when that data occurs again.

Question 5

Frequency Table

Answer 5

The table shows the number of pieces of data that falls within the given interval.

Question 6

Circle Graph

Answer 6

Also known as pie chart that shows the relationships of the parts of the whole. The circle is considered with 100% and the categories occupied is represented with that specific percentage like 15%, 56% , etc

Question 7

Stem and Leaf Plot

Answer 7

In stem and leaf plot , the data are organised from least value to the greatest value. The digits of the least place values from the leaves and the next place value digit forms the stems.

Question 8

Box and Whisker Plot

Answer 8

The plot diagram summarises the data by dividing into four parts. Box and whisker shows the range (spread) and the middle ( median) of the data.

Question 9

Models

Answer 9

A scientific model is a simplified abstract view of a complex reality. Scientific models are used as a basis for scientific work. They can be used to explain, predict, and test, or to develop computer programs or mathematical equations.