00:01
In this problem, we have been given a two -way table.
00:03
It shows the number of 12 -grade students in a school who have bikes and or skateboards at home.
00:09
And we have been given a segmented bar chart.
00:12
Now, first of all, did the student create the segmented bar chart correctly? why or why not? so if we have a look at the segmented bar chart, we can see that, first of all, we have bikes.
00:22
And in the next bar, we have do not have bikes.
00:25
Blue represents having skateboards.
00:27
Orange represents not having skateboards.
00:29
So the shape of the segmented bar chart, this is correct.
00:34
This is how a segmented bar chart looks.
00:36
Now what we need to check is whether the percentages are correct.
00:40
So consider the students who have bikes.
00:44
So we have a total of 70 students who have skateboards and also have bikes.
00:49
And there are a total of 80 students who do not have skateboards but have bikes.
00:54
So 70 plus 80, that's a total of 150 students who have bikes.
00:59
Now, let's calculate the percentage of people who have skateboards out of the people who have bikes.
01:04
So there are a total of 150 people who have bikes and 70 of them have skateboards.
01:07
So we multiply by 100 and tag on the percentage sign and see that this is approximately equal to 46 .67%.
01:14
But if we have a look at the given segmented bar chart, we can see that out of the people who have bikes, it is marked that 70 % of them have skateboards and that does not match this.
01:27
This.
01:27
So that means that no, the student did not create the segmented bar chart correctly...