Interpreting Bar and Circle Graphs

Front

What is a bar graph?

Back

A bar graph is a visual representation of data using bars of different heights or lengths to compare quantities across categories.

Front

What is a circle graph (pie chart)?

Back

A circle graph, or pie chart, is a circular statistical graphic divided into slices to illustrate numerical proportions.

Front

How do you calculate the percentage of a category in a graph?

Back

To calculate the percentage, divide the part by the whole and multiply by 100.

Front

What does it mean if a bar is taller than another in a bar graph?

Back

It indicates that the category represented by the taller bar has a greater quantity compared to the other category.

Front

How can you determine the total number of participants from a circle graph?

Back

You can determine the total by using the known quantity of one category and its percentage of the whole.

Front

What is the formula to find the difference in percentages between two categories?

Back

Subtract the percentage of the smaller category from the percentage of the larger category.

Front

If 45 girls played basketball and this represents 30% of total participants, how many girls are there in total?

Back

150 girls.

Front

What does a 25% preference for left-handed writing indicate in a survey?

Back

It means that 25% of the surveyed students prefer using their left hand for writing.

Front

How do you interpret the data from a bar graph?

Back

Look at the height of the bars to compare the quantities of different categories.

Front

What is the significance of the total in a circle graph?

Back

The total represents the complete dataset from which the percentages of each category are derived.