Descriptive Statistics Flashcards
6 cards from real FAST practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Descriptive Statistics flashcards as text
What is the difference between the mean and the median?
Answer: The mean is the arithmetic average; the median is the middle value when data is ordered
The mean sums all values and divides by count, while the median identifies the middle value in an ordered dataset.
What does standard deviation measure?
Answer: The average amount of variability or spread in a dataset
Standard deviation quantifies how spread out data values are from the mean, indicating the typical distance from the average.
When is the median preferred over the mean?
Answer: When the data contains outliers or is heavily skewed
The median is resistant to extreme values and better represents the center of skewed distributions.
What is a frequency distribution?
Answer: A table or graph showing how often each value or range of values occurs
A frequency distribution organizes data by showing the count or proportion of observations for each value or interval.
What does a box plot display?
Answer: The minimum, first quartile, median, third quartile, and maximum of a dataset
Box plots provide a visual summary of the five-number summary, showing the distribution, spread, and potential outliers.
What is the mode of a dataset?
Answer: The value that appears most frequently
The mode is the most frequently occurring value in a dataset, and a dataset can have multiple modes or none.