Statistics and Probability Flashcards
7 cards from real KYOTE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Statistics and Probability flashcards as text
A student scored 72, 85, 90, 68, and 95 on five tests. What is the mean score?
Answer: 82
The mean is calculated by adding all scores (72+85+90+68+95=410) and dividing by 5, giving 82.
What is the median of the data set: 14, 7, 21, 3, 18?
Answer: 14
When arranged in order (3, 7, 14, 18, 21), the middle value is 14.
In the data set {4, 7, 7, 9, 12, 7, 3}, what is the mode?
Answer: 7
The mode is 7 because it appears three times, more than any other value in the set.
The high temperatures for a week were 78, 82, 75, 90, 83, 79, and 85°F. What is the range?
Answer: 15
The range is the difference between the highest and lowest values: 90 − 75 = 15.
A bag contains 5 red, 3 blue, and 2 green marbles. What is the probability of randomly selecting a blue marble?
Answer: 3/10
There are 3 blue marbles out of 10 total, so the probability is 3/10.
A class recorded weekly study hours: 2, 4, 3, 5, 4, 6, 4, 3, 5, 4. What is the mode?
Answer: 4
The value 4 appears four times, which is more than any other value, making it the mode.
A fair six-sided die is rolled. What is the probability of rolling a number greater than 4?
Answer: 1/3
Numbers greater than 4 are 5 and 6, giving 2 favorable outcomes out of 6 total, which simplifies to 1/3.
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Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy