Try 5 free practice questions with instant feedback. See how ready you are.
Question 1
In a two-way frequency table, what does the value in the bottom-right corner (the grand total cell) represent?
Answer: The grand total represents the sum of ALL individuals or observations in the entire dataset, combining every row and column category.
Question 2
On a double bar graph comparing two groups across several categories, how do you determine which group scored higher in a specific category?
Answer: Compare the heights of the two bars side by side for that category; the taller bar represents the higher value for that group.
Question 3
When a table displays data in scientific notation (e.g., 3.2 × 10⁴), what is the first step to comparing two values accurately?
Answer: Convert both values to the same power of ten (or to standard notation) before comparing, ensuring the exponents match so the coefficients can be directly compared.
Question 4
A pie chart shows a sector labeled 72°. What percentage of the whole does this sector represent?
Answer: 20%, because 72 ÷ 360 = 0.20, and multiplying by 100 gives 20%.
Question 5
What is a key difference between a histogram and a bar graph?
Answer: A histogram displays the distribution of continuous numerical data with no gaps between bars, while a bar graph compares distinct categorical data with spaces between bars.