Challenge your ability to analyze data presented in graphs and tables with these practical questions. This quiz is designed to test your understanding of trends, comparisons, and interpretations commonly found in data analysis scenarios.
A line graph shows the monthly sales of a bookstore rising from $3,000 in January to $5,500 in March, then falling to $4,000 in April. Which month shows the highest sales according to the graph?
Explanation: March is identified as having the highest sales because the graph shows an increase peaking at $5,500 before dropping the following month. January has the lowest sales, and April’s sales decrease compared to March. February is not explicitly stated, but cannot be higher than March as sales rise through that point. Only March fits the description of the highest point before a decline.
A bar chart illustrates the number of visitors to four museums: 2,000 to Museum A, 3,500 to Museum B, 2,800 to Museum C, and 3,200 to Museum D. Which museum received the second highest number of visitors?
Explanation: Museum B has the highest number of visitors at 3,500, while Museum D follows with 3,200, making it the second highest. Museum C and Museum A have lower visitor counts. Some may confuse Museum D with Museum B due to similar values, but Museum D is the correct second highest.
A table lists student enrollment for two years: 400 in 2022 and 500 in 2023. What is the percent increase in enrollment from 2022 to 2023?
Explanation: The percent increase is calculated as (500 - 400) / 400 × 100 = 25%. Choosing 20% or 10% shows a miscalculation or confusion, and 30% overestimates the growth. Only 25% accurately represents the percentage increase from the table’s figures.
Which type of graph is most appropriate for displaying the change in temperature over a week, with daily readings at 8 AM?
Explanation: A line graph is best for showing changes or trends over time, such as daily temperature readings. Pie charts display parts of a whole and are not suited for time-series data. Bar graphs can show comparisons but do not illustrate trends as clearly. Scatter plots are suited for correlation and distribution, not for continuous changes over time.
Given the following weekly profits in dollars as shown in a table: 900, 1,200, 1,100, 1,500, 1,300, what is the median profit?
Explanation: To find the median, order the profits: 900, 1,100, 1,200, 1,300, 1,500. The middle value is 1,200. Options like 1,300 and 1,100 appear in the list but are not the central value. 900 is the lowest and also not the correct answer. Thus, 1,200 is the median.