Question 30

Bar graph

A bar graph is the most effective way to display the frequency of students getting up after 8 a.m. for each day of the week. This type of graph allows for clear comparisons between the different days, making it easy to see trends and patterns in the data.

A) Bar graph

A bar graph is ideal for comparing categorical data, such as the number of students waking up after 8 a.m. on each day of the week. It visually represents the frequency of each category (day), allowing for straightforward interpretation and comparison.

B) Scatter plot

A scatter plot is not suitable for this data type as it is primarily used to show the relationship between two numerical variables. Since the question requires a display of categorical data (days of the week) rather than a correlation, a scatter plot would not effectively convey the intended information.

C) Histogram

A histogram is used to represent the distribution of numerical data over a continuous interval or range. Since the data here is categorical (days of the week) rather than numerical, a histogram would not appropriately represent the frequency of students getting up after 8 a.m.

D) Pie chart

A pie chart displays parts of a whole, but it is less effective for comparing frequencies across multiple categories like the days of the week. While it could show the proportion of students who get up after 8 a.m. on each day, it does not allow for easy direct comparison of frequencies, making it less suitable than a bar graph.

Conclusion

The bar graph is the most effective choice for displaying the frequency of students getting up after 8 a.m. across different days of the week, as it allows for clear visual comparisons. Other options, such as scatter plots, histograms, and pie charts, do not adequately represent categorical data, making them less appropriate for this survey result.