EOC Statistics and Probability Flashcards
6 cards from real EOC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 EOC Statistics and Probability flashcards as text
What is the 'mean' of a data set?
Answer: The sum of all values divided by the number of values
The mean, or arithmetic average, is calculated by adding all values in a data set and then dividing by the total number of values.
In a data set, what is the 'median'?
Answer: The middle value when data is arranged in order
The median is the middle value in a data set when the values are arranged in ascending or descending order, and it is not affected by outliers.
A bag contains 3 red marbles and 7 blue marbles. What is the probability of randomly selecting a red marble?
Answer: 3/10
Probability is calculated as the number of favorable outcomes divided by total outcomes: 3 red ÷ 10 total = 3/10.
What does a 'box plot' (box-and-whisker plot) display?
Answer: The five-number summary of a data set
A box plot displays the five-number summary: minimum, first quartile (Q1), median, third quartile (Q3), and maximum of a data set.
What is the 'range' of a data set?
Answer: The difference between the maximum and minimum values
Range is a measure of spread calculated by subtracting the smallest value from the largest value in a data set.
Which of the following represents mutually exclusive events in probability?
Answer: Flipping heads and flipping tails on the same coin toss
Mutually exclusive events cannot both occur at the same time; flipping heads and tails on a single coin toss is impossible simultaneously.