Grade Six Mathematics
I. II. III. 1. 2. 3. 4. 5. 6. 7. 8.
Ten students scored 10 marks. 17 students scored above 10 marks. A total of 27 students wrote the test. 40 pizzas
He sold the fewest pizzas on Wednesday.
He sold the most pizzas on Tuesday.
He sold 25 pizzas on Monday.
He sold 45 pizzas on Monday and Wednesday in total. More pizzas were sold on Friday than Thursday. 10 less pizzas were sold on Friday than Thursday. A total of 160 pizzas were sold in five days.
Hello, Boys and Girls. Glad to have you back for another session at our weekly Mathematics Corner. So, last time, we delved into tally charts and pictographs. Now, let’s shift our attention and explore two more graphical representations: the bar graph and the pie chart.
Let’s begin.
Bar Graph
Do you know what a bar graph is? I am sure you do!
A bar graph is a visual representation of data where bars of different lengths are used to represent different categories or groups. The length of each bar typically corresponds to the frequency or magnitude of the data it represents. Bar graphs are commonly used to compare quantities or show trends over time.
What do you know about a bar graph? Could you outline some of its characteristics?
Excellent!
Let’s explore some more details regarding the bar graph.
Properties of the Bar Graph
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The gap between one bar and another should be uniform throughout.
It can be either horizontal or vertical.
The rectangles drawn on the bar charts are called “bars”. The bars display the number of items under particular categories.
The height or length of each bar relates directly to its value.
There are two axes present on the graph. One axis is used to represent the numerical values whereas the other represents the categorical data against which the numerical data is plotted.
Ok boys and girls, let us now examine an example!
Example 1
The table below shows the number of T-Shirts sold during the week by a salesman.
Table showing the number of T-Shirts sold during the week.
Let us represent the information given on a bar graph (not drawn to scale).
Can you work one on your own? Let’s see!
Exercise 1
The table below shows the favourite colour of 200 students in a class. Using the information provided, create a bar graph (not drawn to scale).