Data Interpretation and Graphs Flashcards
6 cards from real AQL practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Data Interpretation and Graphs flashcards as text
A graph's y-axis starts at 500 instead of 0. This could be misleading because:
Answer: It exaggerates the visual difference between data points
A truncated axis (not starting at zero) compresses the visual scale and can make small differences appear much larger than they actually are.
A box plot (box-and-whisker plot) displays which of the following?
Answer: The median, quartiles, and range of a data set
A box plot summarizes a data set by showing the median, the first and third quartiles (the box), and the minimum and maximum values (the whiskers).
If a line graph shows a steep upward slope, what does that indicate about the rate of change?
Answer: The variable is increasing rapidly
A steep upward slope on a line graph indicates a large, rapid increase in the measured variable over the given time period.
When interpreting a table of data, what is the first step you should take?
Answer: Read the title and column/row headings to understand what the data represents
Reading the title and headings first ensures you understand what is being measured before attempting any calculations or comparisons.
A scatter plot with data points scattered randomly with no clear trend indicates:
Answer: No correlation between the two variables
When scatter plot points show no discernible pattern or direction, it indicates there is little or no correlation between the two variables.
In a frequency table, the 'relative frequency' of a category is calculated by:
Answer: Dividing the category's count by the total number of observations
Relative frequency is the proportion of observations in a category, calculated by dividing that category's frequency by the total number of observations.