Question

bar graphs
bar graphs are useful for comparing data collected by counting. each bar shows a number counted at a particular time. as on a line graph, the independent variable is plotted on the x - axis, and the dependent variable is plotted on the y - axis. the data are not related so the bars do not touch.
the table below shows classroom size on a particular day. the table is followed by a bar graph that represents the data.
classroom size

number of students	number of classrooms
21	3
22	3
23	2
24	3
25	5
26	5
27	3

get it?

1. describe possible data where using a bar graph would be better than using a line graph.

Explanation:

Bar graphs are better for data with distinct, non - sequential categories or when showing counts of discrete items. For example, if we want to show the number of different types of pets (like cats, dogs, birds) in a neighborhood, a bar graph is suitable. The number of pets of each type is a count, and the types of pets are distinct categories with no inherent order that needs to be connected (unlike in a line graph which is for showing change over a continuous variable like time). Another example could be the number of students in different grade levels (grade 1, grade 2, grade 3, etc.). Each grade level is a distinct category, and we are counting the number of students in each, so a bar graph would be better than a line graph as a line graph would imply a continuous change between grade levels which is not the case.

Answer:

An example of data where a bar graph is better than a line graph is the number of students in different grade levels (e.g., grade 1, grade 2, grade 3) in a school. Each grade level is a distinct category, and we are counting the number of students in each. Since the grade levels are discrete categories with no need to show a continuous change between them (which is what a line graph is for), a bar graph is more appropriate to compare the number of students in each grade.